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Leavens ELS, Lambart LM, St Helen G, Benowitz NL, Mayo MS, Farhad Mahmud KM, Arnold MJ, Nollen NL. Menthol versus tobacco e-liquid flavor: Impact on acute subjective effects, puff patterns, and intentions for use among Black and White menthol smokers. Addict Behav 2024; 155:108038. [PMID: 38613857 DOI: 10.1016/j.addbeh.2024.108038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 04/09/2024] [Accepted: 04/10/2024] [Indexed: 04/15/2024]
Abstract
BACKGROUND The proposed FDA product standard to prohibit menthol as a characterizing flavor in combustible cigarettes has the potential to significantly reduce tobacco-related health disparities. Whether a menthol e-liquid product standard would improve or hinder public health is unknown. No known research has directly examined the impact of menthol vs. tobacco flavored e-liquid use on acute e-cigarette use patterns, subjective experience, behavioral intentions, and craving and withdrawal among menthol cigarette smokers. METHODS Black (n = 47) and White (n = 4) nicotine-deprived menthol smokers with limited e-cigarette experience completed two counterbalanced in-laboratory 30-minute ad libitum vaping sessions with menthol and tobacco nicotine salt-based e-liquid in a randomized crossover pilot trial design. Questionnaires assessed reductions in craving and withdrawal and post-session subjective experience and behavioral intentions. Puff topography was measured continuously throughout each vaping session. RESULTS Measures of puff topography did not differ significantly by e-liquid flavor (all p > .40). Similarly, menthol and tobacco flavored e-cigarettes were both rated positively in terms of subjective effects and behavioral intentions (all p > .10) and about 40 % of participants reported a preference for the tobacco-flavored e-liquid. Finally, participants showed comparable reductions in craving (p = .210) and withdrawal (p = .671) from pre- and post-session regardless of e-liquid flavor. CONCLUSIONS Among menthol smokers in a lab-based setting, findings suggest that menthol vs tobacco e-liquid flavor has little impact on acute changes in puff patterns, subjective experience, behavioral intentions, or craving and withdrawal.
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Affiliation(s)
- Eleanor L S Leavens
- University of Kansas School of Medicine, Department of Population Health, Kansas City, KS, United States; The University of Kansas Cancer Center, Kansas City, KS, United States.
| | - Leah M Lambart
- University of Kansas School of Medicine, Department of Population Health, Kansas City, KS, United States
| | - Gideon St Helen
- Clinical Pharmacology Research Program, Division of Cardiology, University of California, San Francisco, CA, United States
| | - Neal L Benowitz
- Clinical Pharmacology Research Program, Division of Cardiology, University of California, San Francisco, CA, United States
| | - Matthew S Mayo
- The University of Kansas Cancer Center, Kansas City, KS, United States; University of Kansas School of Medicine, Department of Biostatistics & Data Science, Kansas City, KS, United States
| | - Kazi M Farhad Mahmud
- University of Kansas School of Medicine, Department of Biostatistics & Data Science, Kansas City, KS, United States
| | - Michael J Arnold
- University of Kansas School of Medicine, Department of Population Health, Kansas City, KS, United States
| | - Nicole L Nollen
- University of Kansas School of Medicine, Department of Population Health, Kansas City, KS, United States; The University of Kansas Cancer Center, Kansas City, KS, United States
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Lambart L, Nollen NL, Mayo MS, Funk O, Leavens E, Cruvinel E, Brown A, Ahluwalia JS, Sanderson Cox L. The impact of blunt use on smoking abstinence among Black adults: Secondary analysis from randomized controlled smoking cessation clinical trial. Addict Behav 2024; 148:107877. [PMID: 37804748 DOI: 10.1016/j.addbeh.2023.107877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/20/2023] [Accepted: 10/02/2023] [Indexed: 10/09/2023]
Abstract
INTRODUCTION People who smoke cigarettes are more likely than people who do not to use cannabis, including blunts, a tobacco product containing nicotine and marijuana. Blunts represent a challenge for cessation trials because nicotine could make stopping cigarettes more difficult. Few studies have examined the impact of blunt use on individuals actively engaged in a cigarette quit attempt. METHODS Blunt use was assessed at baseline, Weeks 4, 8, 12, 16, and 26 among Black adult people who smoke enrolled in a double-blind, placebo-controlled, randomized trial of varenicline (VAR, n = 300) versus placebo (PBO, n = 200) for smoking cessation. Participants were categorized as ever blunt (blunt use reported at any timepoint) versus non-blunt (no blunt use reported). The primary outcome was salivary cotinine-verified 7-day point prevalence smoking abstinence at Weeks 12 and 26. Logistic regression examined the effects of treatment and blunt use on abstinence. RESULTS 75 participants (mean age 45.6 years (SD = 12.5, range: 22,80); 32 (42%) female) reported blunt use. Logistic regression analyses showed no treatment by blunt use interaction or significant main effect of blunt use on smoking abstinence at Weeks 12 or 26 (p > 0.05). After adjusting for treatment, those who used blunts had statistically similar odds of quitting at Week 12 (OR: 0.68, 95% CI: 0.31, 1.5) and Week 26 (OR: 0.84, 95% CI: 0.38, 1.87) as those who never used blunts during the study. DISCUSSION Blunt use had no statistically significant impact on cessation among participants in a smoking cessation clinical trial. Future trials are needed in which the target of cessation is all combustible products.
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Affiliation(s)
- Leah Lambart
- Department of Population Health, University of Kansas School of Medicine, Kansas City, USA.
| | - Nicole L Nollen
- Department of Population Health, University of Kansas School of Medicine, Kansas City, USA; The University of Kansas Comprehensive Cancer Center, USA
| | - Matthew S Mayo
- The University of Kansas Comprehensive Cancer Center, USA; Department of Biostatistics & Data Science, University of Kansas School of Medicine, Kansas City, USA
| | - Olivia Funk
- Department of Population Health, University of Kansas School of Medicine, Kansas City, USA
| | - Eleanor Leavens
- Department of Population Health, University of Kansas School of Medicine, Kansas City, USA; The University of Kansas Comprehensive Cancer Center, USA
| | - Erica Cruvinel
- Department of Population Health, University of Kansas School of Medicine, Kansas City, USA
| | - Alexandra Brown
- Department of Biostatistics & Data Science, University of Kansas School of Medicine, Kansas City, USA
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, Rhode Island Legorreta Cancer Center at Brown University, Providence, RI, USA
| | - Lisa Sanderson Cox
- Department of Population Health, University of Kansas School of Medicine, Kansas City, USA; The University of Kansas Comprehensive Cancer Center, USA
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Leavens ELS, Lambart L, Diaz FJ, Wagener TL, Ahluwalia JS, Benowitz N, Nollen NL. Nicotine delivery and changes in withdrawal and craving during acute electronic cigarette, heated tobacco product, and cigarette use among a sample of Black and White people who smoke. Nicotine Tob Res 2023:ntad247. [PMID: 38097340 DOI: 10.1093/ntr/ntad247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Indexed: 01/04/2024]
Abstract
INTRODUCTION E-cigarettes and heated tobacco products (HTPs) may serve as potential options for harm reduction for smokers if they possess reward profiles similar to cigarettes. Little is known about the abuse liability of HTPs and e-cigarettes versus cigarettes in racial/ethnic minority smokers. METHODS Twenty-two nicotine-deprived people who smoke (Black [n=12] and White [n=10]) completed three visits that included a standardized 10-puff bout followed by a 50-minute ad libitum use assessment with their usual brand cigarette (UBC), an e-cigarette, and HTP. Visits were completed in a randomized crossover design and were separated by a minimum 48-hour washout period. Assessments included plasma nicotine, Cmax, and reductions in craving and withdrawal. RESULTS UBC delivered significantly greater levels of nicotine compared to the e-cigarette (p<0.001) and HTP (p<0.01) during both the standardized and ad libitum sessions. HTP delivered more nicotine than the e-cigarette during the standardized puffing session (p=0.047) but not the ad libitum session. Only craving during the standardized puffing session and not the ad libitum session showed significant differences across products (p<0.001) such that UBC resulted in the greatest reduction followed by HTP and e-cigarette. DISCUSSION Despite greater nicotine delivery from the UBC compared to e-cigarette and HTP, participants reported reductions in craving and withdrawal across products, particularly following ad libitum use. IMPLICATIONS Use of participant's usual brand cigarettes (UBC) resulted in greater nicotine delivery compared to both the e-cigarette and heated tobacco product (HTP). Despite this relative difference in nicotine delivery, participants reported reductions in craving and withdrawal across products, particularly following ad libitum use. These findings suggest that in this sample of Black and White people who smoke, HTPs and e-cigarettes provided significant relief from negative symptoms that maintain smoking.
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Affiliation(s)
- Eleanor L S Leavens
- University of Kansas School of Medicine, Department of Population Health, Kansas City, KS, USA
- University of Kansas Comprehensive Cancer Center, Kansas City, KS, USA
| | - Leah Lambart
- University of Kansas School of Medicine, Department of Population Health, Kansas City, KS, USA
| | - Francisco J Diaz
- University of Kansas School of Medicine, Department of Biostatistics and Data Science, Kansas City, KS, USA
| | - Theodore L Wagener
- The Ohio State University Comprehensive Cancer Center, Center for Tobacco Research, Columbus, Ohio, USA
- Ohio State University Wexner Medical Center, Department of Internal Medicine, Columbus, Ohio, USA
| | - Jasjit S Ahluwalia
- Brown University, Department of Behavioral and Social Sciences, Providence, RI, USA
| | - Neal Benowitz
- Clinical Pharmacology Research Program, Division of Cardiology, Department of Medicine, University of California, San Francisco, CA
| | - Nicole L Nollen
- University of Kansas School of Medicine, Department of Population Health, Kansas City, KS, USA
- University of Kansas Comprehensive Cancer Center, Kansas City, KS, USA
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Santiago-Torres M, Kwon DM, Mull KE, Sullivan BM, Ahluwalia JS, Alexander AC, Nollen NL, Bricker JB. Efficacy of Web-Delivered Acceptance and Commitment Therapy (ACT) for Helping Black Adults Quit Smoking. J Racial Ethn Health Disparities 2023; 10:2816-2825. [PMID: 36414931 DOI: 10.1007/s40615-022-01458-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/03/2022] [Accepted: 11/07/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Digital smoking cessation interventions may reduce racial disparities in cessation because they are low cost, scalable, and can provide support at any place or time. Despite their promise, whether Black adults engage with and benefit from these tools is largely unknown. In a secondary analysis of a randomized trial, we explored the efficacy of an acceptance and commitment therapy (ACT)-based website (WebQuit) for smoking cessation compared to a US clinical practice guidelines-based website (Smokefree.gov) among Black adults. METHODS A total of 316 Black adult smokers were enrolled in the trial between May 2017 and September 2018 and received access to WebQuit or Smokefree for 12 months. Participants self-reported on 30-day and 7-day abstinence from cigarette smoking at 3, 6, and 12-months. Treatment engagement was objectively measured and compared between arms. Participants also reported on their willingness to accept cues to smoke without smoking. RESULTS WebQuit versus Smokefree participants engaged more with their website (higher number of logins, Incidence Rate Ratio (IRR) = 2.21; 95% CI: 1.70, 2.89). Complete-case 30-day point prevalence abstinence (PPA) at 12-months was 34% for WebQuit vs. 29% for Smokefree (OR = 1.22 95% CI: 0.73, 2.04). Increases in participants' willingness to accept cues to smoke mediated the intervention effect on abstinence from cigarette smoking at 12 months. CONCLUSIONS This study addressed the lack of research on the utilization and efficacy of digital interventions for helping Black adults quit smoking. WebQuit participants engaged more with their website and quit smoking at a somewhat higher rate relative to Smokefree participants, albeit nonsignificant. Findings suggest high acceptability of ACT-based digital interventions to enable Black adult smokers to engage and sustain behavior changes. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT01812278.
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Affiliation(s)
- Margarita Santiago-Torres
- Division of Public Health Sciences, Cancer Prevention Program, Fred Hutchinson Cancer Center, 1100 Fairview Avenue North, Seattle, WA, 98109, USA.
| | - Diana M Kwon
- Division of Public Health Sciences, Cancer Prevention Program, Fred Hutchinson Cancer Center, 1100 Fairview Avenue North, Seattle, WA, 98109, USA
- Department of Psychology, University of Washington, Seattle, WA, USA
| | - Kristin E Mull
- Division of Public Health Sciences, Cancer Prevention Program, Fred Hutchinson Cancer Center, 1100 Fairview Avenue North, Seattle, WA, 98109, USA
| | - Brianna M Sullivan
- Division of Public Health Sciences, Cancer Prevention Program, Fred Hutchinson Cancer Center, 1100 Fairview Avenue North, Seattle, WA, 98109, USA
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, RI, 02912, USA
| | - Adam C Alexander
- TSET Health Promotion Research Center, Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Nicole L Nollen
- Department of Population Health, University of Kansas School of Medicine, 3901 Rainbow Boulevard Mail Stop 1008, Kansas City, KS, 66160, USA
| | - Jonathan B Bricker
- Division of Public Health Sciences, Cancer Prevention Program, Fred Hutchinson Cancer Center, 1100 Fairview Avenue North, Seattle, WA, 98109, USA
- Department of Psychology, University of Washington, Seattle, WA, USA
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Nollen NL, Leavens ELS, Ahluwalia JS, Rice M, Mayo MS, Pulvers K. Menthol versus non-menthol flavouring and switching to e-cigarettes in black and Latinx adult menthol combustible cigarette smokers: secondary analyses from a randomised clinical trial. Tob Control 2023; 32:786-789. [PMID: 35351805 PMCID: PMC10246471 DOI: 10.1136/tobaccocontrol-2021-057180] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 03/08/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND As the US Food and Drug Administration takes regulatory action on menthol cigarettes, debate continues about how restricting menthol e-liquids might impact adult menthol smokers in switching to e-cigarettes. METHODS Switching patterns and e-cigarette acceptability were assessed at week 6 among 64 black and Latinx menthol cigarette smokers who used JUUL menthol (n=39) or non-menthol e-cigarettes ((n=25), primarily mint or mango) as part of a randomised switching trial. RESULTS No clear evidence of effects was found between menthol versus non-menthol e-cigarettes on use or subjective effects/acceptability, effect sizes for all comparisons were small (effect size=0.0-0.2), and Bayes factor ranged from 0.10 to 0.15. Specifically, 82.1% of participants who used menthol-flavoured e-cigarettes fully or partially switched to e-cigarettes compared with 88.0% of participants who used a non-menthol (p=0.75). Further, both groups demonstrated substantial reductions in cigarettes per day (menthol e-cigarettes: -8.5±10.4 vs non-menthol e-cigarettes: -8.8±5.8, p=0.87), comparable grams of e-liquid consumed (menthol e-cigarettes: 9.2±9.8 g vs non-menthol e-cigarettes: 11.0±11.0 g, p=0.47), and positive subjective effects, including 'just right' throat hit (menthol e-cigarettes: 70.7% vs non-menthol e-cigarettes: 66.7%, p=0.93) and flavour liking (menthol e-cigarettes: 75.6% vs non-menthol e-cigarettes: 66.7%, p=0.32). CONCLUSIONS Both menthol and non-menthol e-cigarettes were associated with high rates of use and acceptability among menthol smokers. Findings require confirmation in a fully powered non-inferiority or equivalence study but provide preliminary evidence to inform regulatory action on menthol e-cigarettes that could slow youth initiation without impacting black and Latinx menthol cigarette smokers interested in switching to e-cigarettes. TRIAL REGISTRATION NUMBER NCT03511001.
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Affiliation(s)
- Nicole L Nollen
- Department of Population Health, University of Kansas School of Medicine and the University of Kansas Cancer Center, Kansas City, Kansas, USA
| | - Eleanor L S Leavens
- Department of Population Health, University of Kansas School of Medicine and the University of Kansas Cancer Center, Kansas City, Kansas, USA
| | - Jasjit S Ahluwalia
- Behavioral and Social Sciences, Brown University School of Public Health, Alpert Medical School, and Legorreta Cancer Center, Providence, Rhode Island, USA
| | - Myra Rice
- Neuroscience Interdepartmental Graduate Program, University of California Los Angeles, Los Angeles, California, USA
| | - Matthew S Mayo
- Department of Biostatistics & Data Science, University of Kansas School of Medicine and the University of Kansas Cancer Center, Kansas City, Kansas, USA
| | - Kim Pulvers
- Psychology, California State University San Marcos, San Marcos, California, USA
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Leavens ELS, Mayo MS, Brown AR, Cox LS, Ellerbeck EF, Ahluwalia JS, Nollen NL. Early Treatment Response in Black Smokers Undergoing Pharmacotherapy for Smoking Cessation: A Secondary Analysis of a Randomized Clinical Trial. JAMA Netw Open 2023; 6:e2334695. [PMID: 37728930 PMCID: PMC10512105 DOI: 10.1001/jamanetworkopen.2023.34695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 08/14/2023] [Indexed: 09/22/2023] Open
Abstract
This secondary analysis of a randomized clinical trial investigates the association of early treatment response with smoking cessation among Black smokers.
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Affiliation(s)
- Eleanor L. S. Leavens
- Department of Population Health, University of Kansas School of Medicine, Kansas City
| | - Matthew S. Mayo
- Department of Biostatistics and Data Science, University of Kansas School of Medicine, Kansas City
| | - Alexandra R. Brown
- Department of Biostatistics and Data Science, University of Kansas School of Medicine, Kansas City
| | - Lisa Sanderson Cox
- Department of Population Health, University of Kansas School of Medicine, Kansas City
| | - Edward F. Ellerbeck
- Department of Population Health, University of Kansas School of Medicine, Kansas City
| | - Jasjit S. Ahluwalia
- Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, Rhode Island
| | - Nicole L. Nollen
- Department of Population Health, University of Kansas School of Medicine, Kansas City
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Funk OL, Nollen NL, Wagener TL, Ahluwalia JS, Mayo MS, Mahmud KMF, Lambart L, Leavens ELS. Concurrent Choice Assessment of Preference and Substitutability of E-cigarettes and Heated Tobacco Products for Combustible Cigarettes Among African American and White Smokers. Nicotine Tob Res 2023; 25:1505-1508. [PMID: 37042345 PMCID: PMC10347969 DOI: 10.1093/ntr/ntad052] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 01/20/2023] [Accepted: 04/05/2023] [Indexed: 04/13/2023]
Abstract
INTRODUCTION Alternative nicotine delivery products, including electronic cigarettes (e-cigarettes) and heated tobacco products (HTPs), contain fewer toxicants than combustible cigarettes and offer a potential for harm reduction. Research on the substitutability of e-cigarettes and HTPs is crucial for understanding their impact on public health. This study examined subjective and behavioral preferences for an e-cigarette and HTP relative to participants' usual brand combustible cigarette (UBC) in African American and White smokers naïve to alternative products. AIMS AND METHODS Twenty-two adult African American (n = 12) and White (n = 10) smokers completed randomized study sessions with their UBC and study provided e-cigarette and HTP. A concurrent choice task allowed participants to earn puffs of the products but placed UBC on a progressive ratio schedule, making puffs harder to earn, and e-cigarette and HTP on a fixed ratio schedule to assess behavioral preference for the products. Behavioral preference was then compared to self-reported subjective preference. RESULTS Most participants had a subjective preference for UBC (n = 11, 52.4%), followed by an equal preference for e-cigarette (n = 5, 23.8%) and HTP (n = 5, 23.8%). During the concurrent choice task, participants showed a behavioral preference (i.e., more earned puffs) for the e-cigarette (n = 9, 42.9%), followed by HTP (n = 8, 38.1%), and UBC (n = 4, 19.1%). Participants earned significantly more puffs of the alternative products compared to UBC (p = .011) with no difference in earned puffs between e-cigarettes and HTP (p = .806). CONCLUSIONS In a simulated lab setting, African American and White smokers were willing to substitute UBC for an e-cigarette or HTP when the attainment of UBC became more difficult. TRIAL REGISTRATION NCT04646668. IMPLICATIONS Findings suggest that African American and White smokers are willing to substitute their UBC for an alternative nicotine delivery product (e-cigarette or HTP) when the attainment of cigarettes became more difficult in a simulated lab setting. Findings require confirmation among a larger sample under real-world conditions but add to growing evidence suggesting the acceptability of alternative nicotine delivery products among racially diverse smokers. These data are important as policies that limit the availability or appeal of combustible cigarettes are considered or enacted.
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Affiliation(s)
- Olivia L Funk
- Department of Population Health, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Nicole L Nollen
- Department of Population Health, University of Kansas School of Medicine, Kansas City, KS, USA
- University of Kansas Comprehensive Cancer Center, Kansas City, KS, USA
| | - Theodore L Wagener
- The Ohio State University Comprehensive Cancer Center and The Ohio State University College of Medicine, Columbus, OH, USA
| | - Jasjit S Ahluwalia
- Center for Alcohol and Addiction Studies, Brown University School of Public Health and Alpert Medical School, Providence, RI, USA
- Legorreta Cancer Center at Brown University, Providence, RI, USA
| | - Matthew S Mayo
- Department of Biostatistics and Data Science, University of Kansas School of Medicine, Kansas City, KS, USA
- University of Kansas Comprehensive Cancer Center, Kansas City, KS, USA
| | - Kazi Md Farhad Mahmud
- Department of Biostatistics and Data Science, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Leah Lambart
- Department of Population Health, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Eleanor L S Leavens
- Department of Population Health, University of Kansas School of Medicine, Kansas City, KS, USA
- University of Kansas Comprehensive Cancer Center, Kansas City, KS, USA
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Nollen NL, Ahluwalia JS, Mayo MS, Ellerbeck EF, Leavens ELS, Salzman G, Shanks D, Woodward J, Greiner KA, Cox LS. Multiple Pharmacotherapy Adaptations for Smoking Cessation Based on Treatment Response in Black Adults Who Smoke: A Randomized Clinical Trial. JAMA Netw Open 2023; 6:e2317895. [PMID: 37338906 DOI: 10.1001/jamanetworkopen.2023.17895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/21/2023] Open
Abstract
Importance Adapting to different smoking cessation medications when an individual has not stopped smoking has shown promise, but efficacy has not been tested in racial and ethnic minority individuals who smoke and tend to have less success in quitting and bear a disproportionate share of tobacco-related morbidity and mortality. Objective To evaluate efficacy of multiple smoking cessation pharmacotherapy adaptations based on treatment response in Black adults who smoke daily. Design, Setting, and Participants This randomized clinical trial of adapted therapy (ADT) or enhanced usual care (UC) included non-Hispanic Black adults who smoke and was conducted from May 2019 to January 2022 at a federally qualified health center in Kansas City, Missouri. Data analysis took place from March 2022 to January 2023. Interventions Both groups received 18 weeks of pharmacotherapy with long-term follow-up through week 26. The ADT group consisted of 196 individuals who received a nicotine patch (NP) and up to 2 pharmacotherapy adaptations, with a first switch to varenicline at week 2 and, if needed, a second switch to bupropion plus NP (bupropion + NP) based on carbon monoxide (CO)-verified smoking status (CO ≥6 ppm) at week 6. The UC group consisted of 196 individuals who received NP throughout the duration of treatment. Main Outcomes and Measures Anabasine-verified and anatabine-verified point-prevalence abstinence at week 12 (primary end point) and weeks 18 and 26 (secondary end points). The χ2 test was used to compare verified abstinence at week 12 (primary end point) and weeks 18 and 26 (secondary end points) between ADT and UC. A post hoc sensitivity analysis of smoking abstinence at week 12 was performed with multiple imputation using a monotone logistic regression with treatment and gender as covariates to impute the missing data. Results Among 392 participants who were enrolled (mean [SD] age, 53 [11.6] years; 224 [57%] female; 186 [47%] ≤ 100% federal poverty level; mean [SD] 13 [12.4] cigarettes per day), 324 (83%) completed the trial. Overall, 196 individuals were randomized to each study group. Using intent-to-treat and imputing missing data as participants who smoke, verified 7-day abstinence was not significantly different by treatment group at 12 weeks (ADT: 34 of 196 [17.4%]; UC: 23 of 196 [11.7%]; odds ratio [OR], 1.58; 95% CI, 0.89-2.80; P = .12), 18 weeks (ADT: 32 of 196 [16.3%]; UC: 31 of 196 [15.8%]; OR, 1.04; 95% CI, 0.61-1.78; P = .89), and 26 weeks (ADT: 24 of 196 [12.2%]; UC: 26 of 196 [13.3%]; OR, 0.91; 95% CI, 0.50-1.65; P = .76). Of the ADT participants who received pharmacotherapy adaptations (135/188 [71.8%]), 11 of 135 (8.1%) were abstinent at week 12. Controlling for treatment, individuals who responded to treatment and had CO-verified abstinence at week 2 had 4.6 times greater odds of being abstinent at week 12 (37 of 129 [28.7%] abstinence) than those who did not respond to treatment (19 of 245 [7.8%] abstinence; OR; 4.6; 95% CI, 2.5-8.6; P < .001). Conclusions and Relevance In this randomized clinical trial of adapted vs standard of care pharmacotherapy, adaptation to varenicline and/or bupropion + NP after failure of NP monotherapy did not significantly improve abstinence rates for Black adults who smoke relative to those who continued treatment with NP. Those who achieved abstinence in the first 2 weeks of the study were significantly more likely to achieve later abstinence, highlighting early treatment response as an important area for preemptive intervention. Trial Registration ClinicalTrials.gov Identifier: NCT03897439.
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Affiliation(s)
- Nicole L Nollen
- Department of Population Health and the University of Kansas Cancer Center, University of Kansas School of Medicine, Kansas City
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, Rhode Island
| | - Matthew S Mayo
- Department of Biostatistics and Data Science and the University of Kansas Cancer Center, University of Kansas School of Medicine, Kansas City
| | - Edward F Ellerbeck
- Department of Population Health and the University of Kansas Cancer Center, University of Kansas School of Medicine, Kansas City
| | - Eleanor L S Leavens
- Department of Population Health and the University of Kansas Cancer Center, University of Kansas School of Medicine, Kansas City
| | - Gary Salzman
- Department(s) of Internal Medicine, Division of Respiratory and Critical Care, University of Missouri-Kansas City School of Medicine, University Health, Kansas City, Missouri
| | - Denton Shanks
- Department of Family Medicine and Community Health, University of Kansas School of Medicine, Kansas City
| | - Jennifer Woodward
- Department of Family Medicine and Community Health, University of Kansas School of Medicine, Kansas City
| | - K Allen Greiner
- Department of Family Medicine and Community Health, University of Kansas School of Medicine, Kansas City
| | - Lisa Sanderson Cox
- Department of Population Health and the University of Kansas Cancer Center, University of Kansas School of Medicine, Kansas City
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Lee SC, Maglalang DD, Avila JC, Leavens ELS, Nollen NL, Pulvers K, Ahluwalia JS. Change in E-cigarette risk perception and smoking behavior of Black and Latinx individuals who smoke. Drug Alcohol Depend 2023; 245:109824. [PMID: 36857841 PMCID: PMC10033448 DOI: 10.1016/j.drugalcdep.2023.109824] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 01/24/2023] [Accepted: 02/20/2023] [Indexed: 02/27/2023]
Abstract
INTRODUCTION Trends in knowledge and beliefs about e-cigarette (EC) harm have been changing. Our study examined whether change in risk perception of ECs predicts cigarettes smoked per week (CPW) among Black and Latinx individuals who smoke enrolled in an EC switching randomized clinical trial (RCT). METHODS We analyzed data from one arm of a 6-week EC RCT of individuals who smoke attempting to switch to nicotine salt pod system ECs (n = 110; Black, n = 57; Latinx, n = 53). Our explanatory variable was change in risk perception of ECs compared to combustible cigarettes (CC) from baseline to week 6. Our outcome was CPW measured by a 7-day timeline follow-back interview. A negative binomial GEE model was conducted to examine the association between risk perception and CPW at baseline and week 6. RESULTS The mean CPW decreased from 82.8 (SD=49.8) at baseline to 15.8 (SD=29.8) at week 6. A one-level increase in EC risk perception (i.e., EC perceived as riskier than CC from baseline to week 6) was associated with an increase in CPW (IRR: 1.83, 95% CI: 1.03; 3.24). Latinx participants were more likely to have higher CPW as EC risk perception increased compared to Black participants (IRR=1.89, 95% CI: 1.09; 3.26). CONCLUSION We found that CPW at week 6 was significantly higher as change in risk perception of EC relative to CC increased. Given the influence of risk perception on smoking behavior, people who smoke should be educated on the benefits and harms of ECs.
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Affiliation(s)
- Sangah Clara Lee
- Department of Epidemiology, Brown University School of Public Health, Providence, RI, USA.
| | - Dale Dagar Maglalang
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Behavioral and Social Sciences and Center for Alcohol and Addiction Studies, Brown University School of Public Health, Providence, RI, USA.
| | - Jaqueline C Avila
- Department of Gerontology, University of Massachusetts Boston, Boston, MA, USA.
| | - Eleanor L S Leavens
- Department of Population Health, University of Kansas School of Medicine; University of Kansas Comprehensive Cancer Center, Kansas City, KS, USA.
| | - Nicole L Nollen
- Department of Population Health, University of Kansas School of Medicine; University of Kansas Comprehensive Cancer Center, Kansas City, KS, USA.
| | - Kim Pulvers
- Department of Psychology, California State University San Marcos, San Marcos, CA, USA.
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences and Center for Alcohol and Addiction Studies, Brown University School of Public Health; Department of Medicine, Alpert Medical School, Brown University; Legoretta Cancer Center, Brown University, Providence, RI, USA.
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Nollen NL, Cox LS, Mayo MS, Ellerbeck EF, Arnold MJ, Salzman G, Shanks D, Woodward J, Greiner KA, Ahluwalia JS. Protocol from a randomized clinical trial of multiple pharmacotherapy adaptations based on treatment response in African Americans who smoke. Contemp Clin Trials Commun 2022; 30:101032. [DOI: 10.1016/j.conctc.2022.101032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 10/04/2022] [Accepted: 10/26/2022] [Indexed: 11/06/2022] Open
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Cruvinel E, Richter KP, Pollak KI, Ellerbeck E, Nollen NL, Gajewski B, Sullivan-Blum Z, Zhang C, Shergina E, Scheuermann TS. Quitting Smoking before and after Pregnancy: Study Methods and Baseline Data from a Prospective Cohort Study. Int J Environ Res Public Health 2022; 19:10170. [PMID: 36011811 PMCID: PMC9408087 DOI: 10.3390/ijerph191610170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 08/08/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Smoking during pregnancy and postpartum remains an important public health problem. No known prior study has prospectively examined mutual changes in risk factors and women's smoking trajectory across pregnancy and postpartum. The objective of this study was to report methods used to implement a prospective cohort (Msgs4Moms), present participant baseline characteristics, and compare our sample characteristics to pregnant women from national birth record data. The cohort study was designed to investigate smoking patterns, variables related to tobacco use and abstinence, and tobacco treatment quality across pregnancy through 1-year postpartum. Current smokers or recent quitters were recruited from obstetrics clinics. Analyses included Chi-square and independent sample t-tests using Cohen's d. A total of 62 participants (41 smokers and 21 quitters) were enrolled. Participants were Black (45.2%), White (35.5%), and multiracial (19.3%); 46.8% had post-secondary education; and most were Medicaid-insured (64.5%). Compared with quitters, fewer smokers were employed (65.9 vs 90.5%, Cohen's d = 0.88) and more reported financial strain (61.1% vs 28.6%; Cohen's d = 0.75). Women who continue to smoke during pregnancy cope with multiple social determinants of health. Longitudinal data from this cohort provide intensive data to identify treatment gaps, critical time points, and potential psychosocial variables warranting intervention.
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Affiliation(s)
- Erica Cruvinel
- Department of Population Health, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Kimber P. Richter
- Department of Population Health, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Kathryn I. Pollak
- Department of Population Health Sciences, and Cancer Prevention and Control Program, Duke Cancer Institute, Duke University School of Medicine, Durham, NC 27705, USA
| | - Edward Ellerbeck
- Department of Population Health, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Nicole L. Nollen
- Department of Population Health, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Byron Gajewski
- Department of Biostatistics & Data Science, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Zoe Sullivan-Blum
- Department of Population Health, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Chuanwu Zhang
- Department of Biostatistics & Data Science, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Elena Shergina
- Department of Biostatistics & Data Science, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Taneisha S. Scheuermann
- Department of Population Health, University of Kansas Medical Center, Kansas City, KS 66160, USA
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Avila JC, Sokolovsky AW, Nollen NL, Lee J, Schmid CH, Ahluwalia JS. The effect of race/ethnicity and adversities on smoking cessation among U.S. adult smokers. Addict Behav 2022; 131:107332. [PMID: 35436698 PMCID: PMC9870094 DOI: 10.1016/j.addbeh.2022.107332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 03/31/2022] [Accepted: 04/06/2022] [Indexed: 01/26/2023]
Abstract
INTRODUCTION Black and Hispanic individuals in the US experience more socioeconomic adversities that are associated with disparities in tobacco use and cessation than White individuals. This study examined if racial/ethnic differences in smoking abstinence were mediated by socioeconomic (SES) adversities. METHODS Data from 7,101 established smokers were identified in Wave 1 (2013-2014) of the Population Assessment of Tobacco and Health (PATH) and followed to Wave 4 (2016-2018). The study outcome was cigarette abstinence at Wave 4. The main independent variable was race/ethnicity (Non-Hispanic White [White], Non-Hispanic Black [Black] and Hispanic). The mediators were five measures of SES adversities (unemployment, poverty, difficulty with money, lower education level, lack of health insurance). A weighted Generalized Structural Equation Model (GSEM) was used to estimate the total, direct, and indirect effect of race/ethnicity on the odds of quitting mediated by the five SES adversities. This model was adjusted by study covariates, including health and smoking characteristics. RESULTS The indirect effect of race/ethnicity on cessation showed that differences in quitting between Black and White individuals as well as Hispanic and White individuals were mediated by SES adversities. However, the differences in quitting between Hispanic and Black individuals were not mediated by SES adversities. Black and Hispanic individuals were less likely to quit than White individuals, but Hispanic individuals were more likely to quit than Black individuals. There were no direct effects between Black or Hispanic individuals compared to White individuals. Those with higher SES were more likely to quit compared to those with lower SES. DISCUSSION Smoking abstinence is higher in White individuals compared to Black and Hispanic individuals and is mediated by SES adversities. However, smoking abstinence is higher among Hispanic individuals compared to Black individuals and it is not mediated by SES adversities. Future studies should consider the role of other factors, such as psychosocial support, racism, discrimination, and stress over the life course in explaining differences in smoking abstinence between Black and Hispanic individuals.
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Affiliation(s)
- Jaqueline C. Avila
- Department of Behavioral and Social Sciences and Center for Alcohol and Addiction Studies, School of Public Health, Brown University, United States,Corresponding author at: 121 S Main street, Box G-S121-4, Providence, RI 02912, United States. (J.C. Avila)
| | - Alexander W. Sokolovsky
- Department of Behavioral and Social Sciences and Center for Alcohol and Addiction Studies, School of Public Health, Brown University, United States
| | - Nicole L. Nollen
- Department of Population Health, School of Medicine, University of Kansas Medical Center, United States
| | - Juhan Lee
- Department of Psychiatry, School of Medicine, Yale University, United States
| | - Christopher H. Schmid
- Department of Biostatistics, School of Public Health, Brown University, United States
| | - Jasjit S. Ahluwalia
- Department of Behavioral and Social Sciences and Center for Alcohol and Addiction Studies, School of Public Health, Brown University, United States,Department of Medicine, Alpert School of Medicine, Brown University, United States
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Maglalang DD, Avila JC, Ahluwalia JS, Murphy CM, Alexander AC, Nollen NL. The Role of Financial Strain and Educational Attainment on Smoking Abstinence of African Americans and Whites Who Smoke. Ethn Dis 2022; 32:223-230. [PMID: 35909641 PMCID: PMC9311309 DOI: 10.18865/ed.32.3.223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Objective To examine if reduced financial strain and higher educational attainment would confer less advantage for successful cessation among African Americans than for White individuals. Design A secondary data analysis of the Quit2Live study, a smoking cessation intervention for individuals who smoke. Setting Recruited participants from a metropolitan city in the Midwest. Participants The sample included 224 African American and 225 White individuals who smoke. Main Outcome Measures Our outcome variable was cotinine-verified smoking abstinence at the end-of-treatment (week 12). Our explanatory variables were a combination of financial strain (high, low) and educational attainment (high, low). Methods We implemented a logistic regression analysis and a two-way interaction of the combined financial strain and educational attainment variable and race on smoking abstinence. Results About 25% of the study participants were low financial strain and high education, 41% high financial strain and high education, 23% high financial strain and low education, and 11% low financial strain and low education. A greater proportion of African Americans vs Whites were in the high financial strain/low educational attainment category (28% vs 18%, P = .01). Participants with high financial strain and low educational attainment had substantially lower odds of abstinence (OR = .29 [95% CI: .12, .68]) compared to participants with low financial strain and high educational attainment. Contrary to our hypothesis, race did not moderate this association. Conclusion Findings highlight the constraining role of high financial strain and low educational attainment, irrespective of race, on smoking abstinence among smokers actively engaged in a quit attempt.
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Affiliation(s)
- Dale Dagar Maglalang
- Department of Behavioral and Social Sciences and Center for Alcohol and Addiction Studies, Brown University School of Public Health, Providence RI, Address correspondence to Dale Dagar Maglalang, PhD, MA, MSW; Center for Alcohol and Addiction Studies, Brown University School of Public Health, Providence, RI.
| | - Jaqueline C. Avila
- Department of Behavioral and Social Sciences and Center for Alcohol and Addiction Studies, Brown University School of Public Health, Providence RI
| | - Jasjit S. Ahluwalia
- Department of Behavioral and Social Sciences and Center for Alcohol and Addiction Studies, Brown University School of Public Health, Providence RI,Department of Medicine, Alpert Medical School, Brown University; Legoretta Cancer Center, Brown University, Providence RI
| | - Cara M. Murphy
- Department of Behavioral and Social Sciences and Center for Alcohol and Addiction Studies, Brown University School of Public Health, Providence RI
| | - Adam C. Alexander
- Department of Family and Preventive Medicine, The University of Oklahoma Physicians Family Medicine Center; TSET Health Promotion Research Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK
| | - Nicole L. Nollen
- Department of Population Health, University of Kansas School of Medicine; University of Kansas Cancer Center, Kansas City, KS
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Cox LS, Nollen NL, Mayo MS, Faseru B, Greiner A, Ellerbeck EF, Krebill R, Tyndale RF, Benowitz NL, Ahluwalia JS. Effect of Varenicline Added to Counseling on Smoking Cessation Among African American Daily Smokers: The Kick It at Swope IV Randomized Clinical Trial. JAMA 2022; 327:2201-2209. [PMID: 35699705 PMCID: PMC9198729 DOI: 10.1001/jama.2022.8274] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
IMPORTANCE African American smokers have among the highest rates of tobacco-attributable morbidity and mortality in the US, and effective treatment is needed for all smoking levels. OBJECTIVES To evaluate the efficacy of varenicline vs placebo among African American adults who are light, moderate, and heavy daily smokers. DESIGN, SETTING, AND PARTICIPANTS The Kick It at Swope IV (KIS-IV) trial was a randomized, double-blind, placebo-controlled clinical trial conducted at a federally qualified health center in Kansas City. A total of 500 African American adults who were daily smokers of all smoking levels were enrolled from June 2015 to December 2017; final follow-up was completed in June 2018. INTERVENTIONS Participants were provided 6 sessions of culturally relevant individualized counseling and were randomized (in a 3:2 ratio) to receive varenicline (1 mg twice daily; n = 300) or placebo (n = 200) for 12 weeks. Randomization was stratified by sex and smoking level (1-10 cigarettes/d [light smokers] or >10 cigarettes/d [moderate to heavy smokers]). MAIN OUTCOMES AND MEASURES The primary outcome was salivary cotinine-verified 7-day point prevalence smoking abstinence at week 26. The secondary outcome was 7-day point prevalence smoking abstinence at week 12, with subgroup analyses for light smokers (1-10 cigarettes/d) and moderate to heavy smokers (>10 cigarettes/d). RESULTS Among 500 participants who were randomized and completed the baseline visit (mean age, 52 years; 262 [52%] women; 260 [52%] light smokers; 429 [86%] menthol users), 441 (88%) completed the trial. Treating those lost to follow-up as smokers, participants receiving varenicline were significantly more likely than those receiving placebo to be abstinent at week 26 (15.7% vs 6.5%; difference, 9.2% [95% CI, 3.8%-14.5%]; odds ratio [OR], 2.7 [95% CI, 1.4-5.1]; P = .002). The varenicline group also demonstrated greater abstinence than the placebo group at the end of treatment week 12 (18.7% vs 7.0%; difference, 11.7% [95% CI, 6.0%-17.7%]; OR, 3.0 [95% CI, 1.7-5.6]; P < .001). Smoking abstinence at week 12 was significantly greater for individuals receiving varenicline compared with placebo among light smokers (22.1% vs 8.5%; difference, 13.6% [95% CI, 5.2%-22.0%]; OR, 3.0 [95% CI, 1.4-6.7]; P = .004) and among moderate to heavy smokers (15.1% vs 5.3%; difference, 9.8% [95% CI, 2.4%-17.2%]; OR, 3.1 [95% CI, 1.1-8.6]; P = .02), with no significant smoking level × treatment interaction (P = .96). Medication adverse events were generally comparable between treatment groups, with nausea reported more frequently in the varenicline group (163 of 293 [55.6%]) than the placebo group (90 of 196 [45.9%]). CONCLUSIONS AND RELEVANCE Among African American adults who are daily smokers, varenicline added to counseling resulted in a statistically significant improvement in the rates of 7-day point prevalence smoking abstinence at week 26 compared with counseling and placebo. The findings support the use of varenicline in addition to counseling for tobacco use treatment among African American adults who are daily smokers. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT02360631.
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Affiliation(s)
- Lisa Sanderson Cox
- Department of Population Health, University of Kansas School of Medicine, Kansas City
- University of Kansas Cancer Center, Kansas City
| | - Nicole L. Nollen
- Department of Population Health, University of Kansas School of Medicine, Kansas City
- University of Kansas Cancer Center, Kansas City
| | - Matthew S. Mayo
- University of Kansas Cancer Center, Kansas City
- Department of Biostatistics & Data Science, University of Kansas School of Medicine, Kansas City
| | - Babalola Faseru
- Department of Population Health, University of Kansas School of Medicine, Kansas City
- University of Kansas Cancer Center, Kansas City
| | - Allen Greiner
- Department of Family Medicine, University of Kansas School of Medicine, Kansas City
| | - Edward F. Ellerbeck
- Department of Population Health, University of Kansas School of Medicine, Kansas City
- University of Kansas Cancer Center, Kansas City
| | - Ron Krebill
- Department of Biostatistics & Data Science, University of Kansas School of Medicine, Kansas City
| | - Rachel F. Tyndale
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario, Canada
| | | | - Jasjit S. Ahluwalia
- Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, Rhode Island
- Legorreta Cancer Center at Brown University, Providence, Rhode Island
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15
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Nollen NL, Mayo MS, Onge JMS, Scheuermann TS, Cox LS, Chae D, Leavens E, Ahluwalia JS. The effect of area-level disadvantage and race on smoking abstinence in a clinical trial. Exp Clin Psychopharmacol 2022; 30:279-286. [PMID: 34370500 PMCID: PMC8825869 DOI: 10.1037/pha0000493] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Reasons for Black-White disparities in smoking abstinence are not well understood. This study examined area-level socioeconomic disadvantage as a contributor to lower quit rates for Blacks who smoke among 223 Black and 221 White low-income individuals who smoke enrolled in a smoking cessation trial. Outcome was cotinine-verified abstinence at week 26. Census tract-level disadvantage was measured using 5-year estimates linked to participants' home address and included percentage of: female headed households; public assistance; unemployed; < 100% of the federal poverty level; and whether there was > 25% having less than a high school education. A neighborhood disadvantage index score (DIS) was calculated as the sum of z scores for each variable. Black participants lived in more disadvantaged areas than White participants [DIS mean (SD): 3.2 (4.3), -1.0 (3.2), p < .001]. Similar rates of abstinence were observed at the same level of disadvantage [DIS ≥ 50th percentile (less disadvantage): 21.9% Blacks, 26.2% Whites, p = .50; DIS < 50th percentile (more disadvantage): 10.7% Blacks, 15.8% Whites, p = .31]. Only DIS but neither race nor the interaction was retained in the final model predicting abstinence; each unit increase in DIS was associated with 9% reduced odds of abstinence, OR: 0.91, 95% CI [0.87,0.96]. Findings point to the importance of examining factors associated with race that contribute to health inequities and underscore the need to consider how consequences of systemic racism, such as neighborhood context and other consequences not captured by the DIS, can constrain or facilitate smoking cessation when developing interventions. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
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Affiliation(s)
- Nicole L. Nollen
- Department of Population Health, University of Kansas School of Medicine, Kansas City, Kansas
| | - Matthew S. Mayo
- Department of Biostatistics, University of Kansas School of Medicine, Kansas City, Kansas
| | - Jarron M. Saint Onge
- Department of Population Health, University of Kansas School of Medicine, Kansas City, Kansas,Department of Sociology, University of Kansas, Lawrence, Kansas
| | - Taneisha S. Scheuermann
- Department of Population Health, University of Kansas School of Medicine, Kansas City, Kansas
| | - Lisa Sanderson Cox
- Department of Population Health, University of Kansas School of Medicine, Kansas City, Kansas
| | - David Chae
- Department of Global Community Health & Behavioral Sciences, School of Public Health & Tropical Medicine, Tulane University, New Orleans, Louisiana
| | - Eleanor Leavens
- Department of Population Health, University of Kansas School of Medicine, Kansas City, Kansas
| | - Jasjit S. Ahluwalia
- Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, Rhode Island
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Cruvinel E, P Richter K, S Scheuermann T, M Machado N, Mayo MS, R Brown A, L Nollen N. The impact of COVID-19 on income and employment and willingness to become vaccinated among African Americans enrolled in a smoking cessation randomized trial. Vaccine 2022; 40:1712-1716. [PMID: 35168840 PMCID: PMC8818374 DOI: 10.1016/j.vaccine.2022.01.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 01/26/2022] [Accepted: 01/31/2022] [Indexed: 01/31/2023]
Abstract
Given vulnerability to COVID-19 among smokers and vaccine hesitancy among populations disproportionately burdened with COVID-19, it’s important to understand concerns about vaccines and the impact of COVID-19 on these subgroups. Among our all African American (AA) sample of smokers (N = 172) enrolled in a larger smoking cessation clinical trial, results demonstrated an intensive burden from COVID-19; 42 (24.4%) lost employment, 56 (32.6%) lost household income, and 66 (38.4%) reported inability to pay bills and buy food due to COVID. Most, 103 (64.4%), were willing to get vaccinated. Among the vaccine-hesitant, 57 (35.6%), concerns about COVID-19 vaccine development and mistrust in vaccines were primary reasons for unwillingness to get vaccinated. Few identified doctor’s advice as most valued in deciding if the vaccine was the best option. Findings highlight high openness to the vaccine among smokers impacted by COVID but reiterate the need for community-engaged versus health system-driven approaches to improve vaccine hesitancy among racial/ethnic minorities.
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Affiliation(s)
- Erica Cruvinel
- Population Health Department, University of Kansas Medical Center. Kansas City, KS, United States.
| | - Kimber P Richter
- Population Health Department, Cancer Center, University of Kansas Medical Center, Kansas City, KS, United States.
| | - Taneisha S Scheuermann
- Population Health Department, University of Kansas Medical Center. Kansas City, KS, United States.
| | - Nathalia M Machado
- Population Health Department, University of Kansas Medical Center. Kansas City, KS, United States.
| | - Matthew S Mayo
- Department of Biostatistics & Data Science, Cancer Center, University of Kansas Medical Center, Kansas City, KS, United States.
| | - Alexandra R Brown
- Department of Biostatistics & Data Science, University of Kansas Medical Center, Kansas City, KS, United States.
| | - Nicole L Nollen
- Population Health Department, Cancer Center, University of Kansas Medical Center, Kansas City, KS, United States.
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Rice M, Nollen NL, Ahluwalia JS, Benowitz N, Woodcock A, Pulvers K. Effects of Marijuana Use on Smokers Switching to E-Cigarettes in a Randomized Clinical Trial. Nicotine Tob Res 2022; 24:994-1002. [PMID: 35022796 PMCID: PMC9199934 DOI: 10.1093/ntr/ntac008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 01/04/2022] [Accepted: 01/07/2022] [Indexed: 01/13/2023]
Abstract
INTRODUCTION Co-use of tobacco and marijuana is common, and research suggests that marijuana use may be a barrier to smoking cessation. Research to date has not evaluated how marijuana use affects e-cigarette switching behaviors and related outcomes in a harm reduction trial. AIMS AND METHODS This secondary analysis includes African American (48%) and Latinx (52%) adult smokers randomized to the e-cigarette group (N = 114) of a harm reduction clinical trial from 2018 to 2019. Participants were provided JUUL e-cigarettes and encouraged to make an exclusive switch for 6 weeks. Our primary outcome was cigarettes smoked per week. Secondary health outcomes were e-cigarette substitution (calculated by measuring e-cigarette pod use), expired carbon monoxide (CO), and respiratory symptoms. Marijuana products were recorded at three timepoints and coded for combustion. RESULTS Marijuana use during the study (n = 52, 46%) was not associated with week 6 cigarettes smoked or e-cigarette substitution, and combustible marijuana use was not associated with week 6 respiratory symptoms (ps > .05). After controlling for cigarettes smoked at week 6, combustible marijuana use was significantly associated with a 4.4 ppm increase in CO compared with no use of marijuana (p = .001). CONCLUSIONS Marijuana use was not a barrier to switching to e-cigarettes in this 6-week trial. Marijuana use contributed to elevated CO, reflecting greater exposure to toxic combustion products, beyond the effects of cigarette smoking. Marijuana co-use may increase risk of adverse health outcomes and may be a confounding factor when using CO as an endpoint to bioverify exclusive e-cigarette use. IMPLICATIONS This is the first known study to examine the effects of marijuana use on smokers switching to e-cigarettes. Marijuana use was not a barrier to cigarette reduction in a 6-week randomized clinical trial. Marijuana use uniquely contributed to higher carbon monoxide among cigarette smokers, indicating greater exposure to toxic combustion products, which could increase risk of adverse health outcomes. Furthermore, combustible marijuana use may be a confounding factor when CO is used as an endpoint to bioverify exclusive e-cigarette use.
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Affiliation(s)
- Myra Rice
- Corresponding Author: Myra Rice, MA, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, CA 90095, USA. Telephone: (760) 334-3244; E-mail:
| | - Nicole L Nollen
- Department of Population Health and the University of Kansas Cancer Center, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences and the Center for Alcohol and Addiction Studies, School of Public Health, Brown University, Providence, RI, USA,Department of Medicine and Brown Cancer Center, Alpert Medical School, Brown University, Providence, RI, USA
| | - Neal Benowitz
- Program in Clinical Pharmacology, Division of Cardiology, Department of Medicine, University of California, San Francisco School of Medicine, San Francisco, CA, USA
| | - Anna Woodcock
- Department of Psychology, California State University San Marcos, San Marcos, CA, USA
| | - Kim Pulvers
- Department of Psychology, California State University San Marcos, San Marcos, CA, USA
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Rubenstein D, Sokolovsky AW, Aston ER, Nollen NL, Schmid CH, Rice M, Pulvers K, Ahluwalia JS. Predictors of smoking reduction among African American and Latinx smokers in a randomized controlled trial of JUUL e-cigarettes. Addict Behav 2021; 122:107037. [PMID: 34284312 DOI: 10.1016/j.addbeh.2021.107037] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 05/07/2021] [Accepted: 06/29/2021] [Indexed: 11/15/2022]
Abstract
INTRODUCTION E-cigarette (e-cig) use is widespread and may play an important role in facilitating smoking reduction. Racial/ethnic minorities are less likely than Whites to use e-cigs and suffer disproportionate tobacco-related disease, making them a priority for harm reduction. This paper explores factors associated with smoking reduction among African American (AA) and Latinx smokers enrolled in a trial assessing toxicant exposure in those assigned to e-cigs or smoking as usual. METHODS Participants were randomized to receive 6 weeks of JUUL e-cigs or continue smoking cigarettes as usual (N = 187). This analysis focuses on 109 participants randomized to e-cigs. We modeled cigarettes smoked in the past week at baseline and week 6 as a function of a priori selected predictors (number of JUUL pods used throughout the study, baseline cigarette dependence, and baseline cotinine) using a Poisson model fit with generalized estimating equations. RESULTS Over the six-week study, cigarette smoking decreased from an average of 82.4 to 15.5 cigarettes per week. Greater numbers of JUUL pods used predicted a greater smoking reduction by week 6 (IRR = 0.94 [0.91, 0.96], p < 0.001). Higher baseline cigarette dependence (IRR = 1.03 [1.01, 1.05], p = 0.004), and baseline cotinine (IRR = 1.18 [1.03, 1.37], p = 0.020) predicted a lesser smoking reduction. CONCLUSIONS AA and Latinx smokers reduced their cigarette consumption while using JUUL e-cigs. Higher e-cig use during an intervention to switch to e-cigs to reduce harm may facilitate a transition to smoking fewer cigarettes, offering an opportunity to narrow smoking-related health disparities.
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Affiliation(s)
- Dana Rubenstein
- Department of Behavioral and Social Sciences and the Center for Alcohol and Addiction Studies, School of Public Health, Brown University, Providence, RI, United States.
| | - Alexander W Sokolovsky
- Department of Behavioral and Social Sciences and the Center for Alcohol and Addiction Studies, School of Public Health, Brown University, Providence, RI, United States
| | - Elizabeth R Aston
- Department of Behavioral and Social Sciences and the Center for Alcohol and Addiction Studies, School of Public Health, Brown University, Providence, RI, United States
| | - Nicole L Nollen
- Department of Population Health, University of Kansas School of Medicine, Kansas City, KS, United States
| | - Christopher H Schmid
- Department of Biostatistics, School of Public Health, Brown University, Providence, RI, United States
| | - Myra Rice
- Department of Psychology, California State University San Marcos, San Marcos, CA, United States
| | - Kim Pulvers
- Department of Psychology, California State University San Marcos, San Marcos, CA, United States
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences and the Center for Alcohol and Addiction Studies, School of Public Health, Brown University, Providence, RI, United States
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Pulvers K, Rice M, Ahluwalia JS, Arnold MJ, Marez C, Nollen NL. "It is the One Thing that has Worked": facilitators and barriers to switching to nicotine salt pod system e-cigarettes among African American and Latinx people who smoke: a content analysis. Harm Reduct J 2021; 18:98. [PMID: 34530834 PMCID: PMC8447685 DOI: 10.1186/s12954-021-00543-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 09/02/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Electronic cigarettes are a harm reduction strategy for individuals who smoke cigarettes who cannot or do not want to quit using FDA-approved cessation methods. Identifying perceived facilitators and barriers to switching among people who smoke cigarettes is critical to optimizing health impact. This is particularly important for the most dominant e-cigarette device, nicotine salt pod electronic cigarettes. We investigate the experience using pod electronic cigarettes among African American and Latinx individuals who smoke, the two largest racial/ethnic minority groups who experience significant health disparities. METHODS From July 2018 to May 2019, adults who smoked cigarettes, age 21 + (N = 114; M age = 44.6, 59.6% male, 52.6% African American from Kansas City, 47.4% Latinx from San Diego) received JUUL-brand electronic cigarettes (referred to hereafter as JUUL) for 6 weeks and answered interview questions at week six. We inquired what they liked and disliked about using JUUL, what helped with switching and made switching difficult, future intentions for continued JUUL use, and how JUUL compared to past smoking reduction methods. Responses were coded into themes by independent raters. Theme frequencies were analyzed separately by race/ethnicity and week 6 use trajectory (exclusive JUUL use, dual JUUL and cigarette use, exclusive cigarette use). RESULTS Clean/smell was the aspect of using JUUL most commonly liked (23%), followed by convenience (19%). Coughing/harshness was a more common barrier to switching for African American (44%) than Latinx (9%), and for continuing cigarette use (56%) than for those who exclusively switched or dually used JUUL and combustible cigarettes (15-21%). Most (78% African American; 90% Latinx) reported that the benefits of using JUUL outweighed barriers, and this varied by JUUL use trajectory: 94% exclusive switch, 86% dual use, and 42% continued cigarette use. The majority said they would continue using JUUL to replace cigarettes (83% African American; 94% Latinx) and that JUUL worked better than other methods to reduce cigarettes (72%). CONCLUSION African American and Latinx individuals who smoked experience using pod electronic cigarettes was generally positive. Understanding facilitators and impediments to switching to electronic cigarettes among racial/ethnic minority people who smoke can inform harm reduction interventions and reduce tobacco-related health disparities. Trial Registration ClinicalTrials.gov Identifier: NCT03511001 posted April 27, 2018.
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Affiliation(s)
- Kim Pulvers
- Department of Psychology, California State University San Marcos, 333 S. Twin Oaks Valley Rd., San Marcos, CA, 92096, USA.
| | - Myra Rice
- Neuroscience Interdepartmental Program, University of California, Los Angeles, CA, 90095, USA
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences and the Center for Alcohol and Addiction Studies, School of Public Health, Department of Medicine and Brown Cancer Center, Alpert Medical School, Brown University, Providence, RI, USA
| | - Michael J Arnold
- Department of Population Health, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Crystal Marez
- Department of Psychology, California State University San Marcos, 333 S. Twin Oaks Valley Rd., San Marcos, CA, 92096, USA
| | - Nicole L Nollen
- Department of Population Health, University of Kansas School of Medicine, Kansas City, KS, USA
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Leavens ELS, Carpenter MJ, Smith TT, Nollen NL. Exploratory evaluation of online brief education for JUUL pod-mod use and prevention. Addict Behav 2021; 119:106942. [PMID: 33866224 DOI: 10.1016/j.addbeh.2021.106942] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 03/26/2021] [Accepted: 03/30/2021] [Indexed: 11/17/2022]
Abstract
INTRODUCTION Initiation of e-cigarette use by young adults is a significant public health issue within the debate on vaping. The current study is an exploratory evaluation of brief educational information among young adults and investigated outcomes as a function of JUUL use and smoking status. METHODS Participants (N = 947) were young adults (<30 years old) recruited from Amazon's Mechanical Turk based on smoking and JUUL use status. Participants completed baseline assessments, viewed a brief JUUL educational handout, and completed post-assessments. RESULTS There was a significant Time X Group interaction for JUUL-related knowledge (p < .001), with never JUUL/never smokers showing the greatest increase in knowledge. Brief education increased JUUL-related knowledge and risk perceptions and had a modest impact on commitment to quitting and readiness to quit JUUL (all p ≤ 0.001; ds = 0.06-0.74; time × group p > .05 for all contrasts except JUUL-related knowledge). Participants showed modest decreases in interest in future JUUL use, interest in purchasing, and interest in future regular use (all p ≤ 0.001; ds = 0.07-0.08; time × group p > .05 for all contrasts). In terms of smoking outcomes, participants reported reduced perceived harm to others (p < .001; d = 0.09) and decreased intentions to smoke regularly (p = .001; d = 0.07). CONCLUSIONS Brief education was effective in increasing knowledge and risk perceptions while showing a modest effect on intentions for future use. The information was most effective in increasing knowledge among non-users, suggesting that brief education may be useful for preventing initiation. Analysis of group differences suggest current JUUL use status is more important in informing JUUL-related attitudes than smoking status.
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Affiliation(s)
- Eleanor L S Leavens
- Medical University of South Carolina, Department of Psychiatry and Behavioral Sciences and Hollings Cancer Center, United States; University of Kansas School of Medicine, Department of Population Health, United States.
| | - Matthew J Carpenter
- Medical University of South Carolina, Department of Psychiatry and Behavioral Sciences and Hollings Cancer Center, United States
| | - Tracy T Smith
- Medical University of South Carolina, Department of Psychiatry and Behavioral Sciences and Hollings Cancer Center, United States
| | - Nicole L Nollen
- University of Kansas School of Medicine, Department of Population Health, United States
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Arnold MJ, Nollen NL, Mayo MS, Ahluwalia JS, Leavens EL, Zhang G, Rice M, Pulvers K. Harm reduction associated with dual use of cigarettes and e-cigarettes in Black and Latino smokers: Secondary analyses from a randomized controlled e-cigarette switching trial. Nicotine Tob Res 2021; 23:1972-1976. [PMID: 33837422 DOI: 10.1093/ntr/ntab069] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 04/05/2021] [Indexed: 11/13/2022]
Abstract
INTRODUCTION Most adult cigarette smokers who use e-cigarettes are dual cigarette and e-cigarette (CC-EC) users, yet little is known about relative consumption of cigarettes to e-cigarettes and any associated harm reduction. METHODS Rate of substitution from cigarettes to e-cigarettes at week 6 and change in biomarkers of exposure and potential harm were examined among dual CC-EC users [64/114 (56%); 35 Black, 29 Latino] in an e-cigarette switching randomized trial. RESULTS Dual users averaged 79% substitution of cigarettes for e-cigarettes at week 6, resulting in a reduction from baseline of 70.0 ± 54.1 cigarettes per week (p < .001). Total nicotine consumption remained stable (baseline: 1160.5 ± 1042.1 pg/mL of cotinine, week 6: 1312.5 ± 1725.9 pg/mL of cotinine, p = .47), while significant reductions were seen in the potent lung carcinogen 4-(methylnitrosamino)-1-(3-pyridul)-1-butanol (NNAL) (-55.9 ± 88.6 ng/ml, p < .001), carbon monoxide (-6.3 ± 8.6 ppm, p < .001), and self-reported respiratory symptoms (-3.3 ± 8.0, p = .002). No significant changes were found in blood pressure or spirometry. Greater substitution from cigarettes to e-cigarettes was associated with larger reductions in NNAL (r = -.29, p = .02). CONCLUSIONS The predominant dual use pattern was characterized by regular e-cigarette and intermittent cigarette use. Findings demonstrate the short-term harm reduction potential of this dual use pattern in Black and Latino smokers and suggest that the greatest benefit, aside from cessation of both products, is achieved by higher substitution of e-cigarettes for cigarettes. Findings need confirmation in a larger sample with longer follow-up in dual users with greater variability in rate of substitution.
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Affiliation(s)
- Michael J Arnold
- Department of Population Health, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Nicole L Nollen
- Department of Population Health, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Matthew S Mayo
- Department of Biostatistics & Data Science, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences and the Center for Alcohol and Addiction Studies, School of Public Health and Alpert Medical School, Brown University, Providence, RI, USA
| | - Eleanor L Leavens
- Department of Population Health, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Guanlin Zhang
- Department of Biostatistics & Data Science, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Myra Rice
- Department of Psychology, California State University San Marcos, San Marcos, CA, USA
| | - Kim Pulvers
- Department of Psychology, California State University San Marcos, San Marcos, CA, USA
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22
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Nollen NL, Ahluwalia JS, Sanderson Cox L, Okuyemi K, Lawrence D, Samuels L, Benowitz NL. Assessment of Racial Differences in Pharmacotherapy Efficacy for Smoking Cessation: Secondary Analysis of the EAGLES Randomized Clinical Trial. JAMA Netw Open 2021; 4:e2032053. [PMID: 33464316 PMCID: PMC7816102 DOI: 10.1001/jamanetworkopen.2020.32053] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
IMPORTANCE Understanding Black vs White differences in pharmacotherapy efficacy and the underlying reasons is critically important to reducing tobacco-related health disparities. OBJECTIVE To compare pharmacotherapy efficacy and examine variables to explain Black vs White differences in smoking abstinence. DESIGN, SETTING, AND PARTICIPANTS This study is a secondary analysis of the Evaluating Adverse Events in a Global Smoking Cessation Study (EAGLES) double-blind, placebo-controlled, randomized clinical trial, which took place at clinical trial centers, academic centers, and outpatient clinics in 29 states in the US. US Black and White smokers who smoked 10 or more cigarettes per day with and without psychiatric comorbidity were enrolled between November 2011 and January 2015. Data analysis was performed from July 2019 to January 2020. INTERVENTIONS Participants were randomized (1:1:1:1) in a double-blind, triple-dummy, placebo- and active-controlled (nicotine patch) trial of varenicline and bupropion for 12 weeks with follow-up through week 24. MAIN OUTCOMES AND MEASURES Biochemically verified continuous cigarette abstinence rate (CAR) from weeks 9 to 24. Baseline, postbaseline treatment, and safety characteristics were examined as variables to explain race differences in abstinence. RESULTS Of the 1065 Black smokers enrolled, 255 were randomized to receive varenicline, 259 received bupropion, 286 received nicotine replacement therapy (NRT [ie, nicotine patch]), and 265 received placebo. Among the 3044 White smokers enrolled, 778 were randomized to receive varenicline, 769 received bupropion, 738 received NRT, and 759 received placebo. Participants were predominantly female (614 Black [57.7%] and 1786 White [58.7%] women) and heavy smokers (mean [SD] cigarettes per day, 18.2 [7.9] for Black and 20.0 [7.5] for White smokers), with a mean (SD) age of 47.2 (11.2) years for Black and 46.5 (12.7) years for White participants. Treatment and race were associated with CAR for weeks 9 to 24. The CAR was 4.9% lower for Black vs White participants (odds ratio [OR], 0.53; 95% CI, 0.41-0.69; P < .001); differences were found across all treatments. Pooling psychiatric and nonpsychiatric cohorts, varenicline (OR, 2.63; 95% CI, 1.90-3.63; P < .001), bupropion (OR, 1.75; 95% CI, 1.25-2.46; P = .001), and NRT (OR, 1.52; 95% CI, 1.07-2.16; P = .02) had greater efficacy than placebo for White participants. Only varenicline (OR, 2.63; 95% CI, 1.26-5.48; P = .01) had greater efficacy than placebo for Black participants. Baseline, postbaseline, and safety characteristics differed by race, but these variables did not eliminate the association of race with CAR. Black participants had 49% reduced odds of CAR for weeks 9 to 24 compared with White participants in the adjusted model (OR, 0.51; 95% CI, 0.39-0.66; P < .001). CONCLUSIONS AND RELEVANCE Black and White smokers achieved the highest rate of abstinence while taking varenicline, suggesting that it is the best first-line therapy for these groups. However, Black smokers were less responsive to all therapies, including placebo. Understanding variables (eg, socioeconomic or biological) beyond those may lead to improved treatment outcomes for Black smokers. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT01456936.
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Affiliation(s)
- Nicole L. Nollen
- Department of Population Health, University of Kansas School of Medicine, Kansas City
| | - Jasjit S. Ahluwalia
- Alpert Medical School, Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, Rhode Island
- Alpert Medical School, Department of Medicine, Brown University School of Public Health, Providence, Rhode Island
| | - Lisa Sanderson Cox
- Department of Population Health, University of Kansas School of Medicine, Kansas City
| | - Kolawole Okuyemi
- Department of Family and Preventive Medicine, The University of Utah School of Medicine, Salt Lake City
| | | | | | - Neal L. Benowitz
- Department of Medicine, Bioengineering, and Therapeutic Sciences, University of California, San Francisco
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23
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El-Boraie A, Chenoweth MJ, Pouget JG, Benowitz NL, Fukunaga K, Mushiroda T, Kubo M, Nollen NL, Sanderson Cox L, Lerman C, Knight J, Tyndale RF. Transferability of Ancestry-Specific and Cross-Ancestry CYP2A6 Activity Genetic Risk Scores in African and European Populations. Clin Pharmacol Ther 2020; 110:975-985. [PMID: 33300144 DOI: 10.1002/cpt.2135] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 12/01/2020] [Indexed: 12/14/2022]
Abstract
The Nicotine Metabolite Ratio (NMR; 3-hydroxycotinine/cotinine), a highly heritable index of nicotine metabolic inactivation by the CYP2A6 enzyme, is associated with numerous smoking behaviors and diseases, as well as unique cessation outcomes. However, the NMR cannot be measured in nonsmokers, former smokers, or intermittent smokers, for example, in evaluating tobacco-related disease risk. Traditional pharmacogenetic groupings based on CYP2A6 * alleles capture a modest portion of NMR variation. We previously created a CYP2A6 weighted genetic risk score (wGRS) for European (EUR)-ancestry populations by incorporating independent signals from genome-wide association studies to capture a larger proportion of NMR variation. However, CYP2A6 genetic architecture is unique to ancestral populations. In this study, we developed and replicated an African-ancestry (AFR) wGRS, which captured 30-35% of the variation in NMR. We demonstrated model robustness against known environmental sources of NMR variation. Furthermore, despite the vast diversity within AFR populations, we showed that the AFR wGRS was consistent between different US geographical regions and unaltered by fine AFR population substructure. The AFR and EUR wGRSs can distinguish slow from normal metabolizers in their respective populations, and were able to reflect unique smoking cessation pharmacotherapy outcomes previously observed for the NMR. Additionally, we evaluated the utility of a cross-ancestry wGRS, and the capacity of EUR, AFR, and cross-ancestry wGRSs to predict the NMR within stratified or admixed AFR-EUR populations. Overall, our findings establish the clinical benefit of applying ancestry-specific wGRSs, demonstrating superiority of the AFR wGRS in AFRs.
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Affiliation(s)
- Ahmed El-Boraie
- Department of Pharmacology & Toxicology, University of Toronto, Toronto, Ontario, Canada.,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health and Division of Brain and Therapeutics, Toronto, Ontario, Canada
| | - Meghan J Chenoweth
- Department of Pharmacology & Toxicology, University of Toronto, Toronto, Ontario, Canada.,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health and Division of Brain and Therapeutics, Toronto, Ontario, Canada
| | - Jennie G Pouget
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health and Division of Brain and Therapeutics, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - Neal L Benowitz
- Clinical Pharmacology Research Program, Division of Cardiology, Department of Medicine and Center for Tobacco Control Research and Education, University of California San Francisco, San Francisco, California, USA
| | - Koya Fukunaga
- Center for Integrative Medical Sciences, RIKEN, Kanagawa, Japan
| | | | - Michiaki Kubo
- Center for Integrative Medical Sciences, RIKEN, Kanagawa, Japan
| | - Nicole L Nollen
- Department of Population Health, School of Medicine, University of Kansas, Kansas City, Kansas, USA
| | - Lisa Sanderson Cox
- Department of Population Health, School of Medicine, University of Kansas, Kansas City, Kansas, USA
| | - Caryn Lerman
- Department of Psychiatry and USC Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California, USA
| | - Jo Knight
- Data Science Institute and Medical School, Lancaster University, Lancaster, UK
| | - Rachel F Tyndale
- Department of Pharmacology & Toxicology, University of Toronto, Toronto, Ontario, Canada.,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health and Division of Brain and Therapeutics, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
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Pulvers K, Nollen NL, Rice M, Schmid CH, Qu K, Benowitz NL, Ahluwalia JS. Effect of Pod e-Cigarettes vs Cigarettes on Carcinogen Exposure Among African American and Latinx Smokers: A Randomized Clinical Trial. JAMA Netw Open 2020; 3:e2026324. [PMID: 33206193 PMCID: PMC7675102 DOI: 10.1001/jamanetworkopen.2020.26324] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
IMPORTANCE Fourth-generation nicotine salt pod system (NSPS) electronic cigarettes (e-cigarettes) are the leading class of e-cigarettes. They contain high nicotine concentrations, which may facilitate switching among smokers, but could also lead to increased exposure to nicotine and biomarkers of potential harm. African American and Latinx smokers experience significant tobacco-related health disparities. The potential of NSPS e-cigarettes to reduce smoking-related harm among these groups is unknown. OBJECTIVE To compare the harm reduction potential of NSPS e-cigarette vs combustible cigarettes. DESIGN, SETTING, AND PARTICIPANTS This unblinded randomized clinical trial compared 6 weeks of e-cigarette use vs cigarettes as usual from to 2018 to 2019 among smokers in the San Diego, California, and Kansas City, Missouri, areas. Participants included African American and Latinx adult combustible cigarette smokers who smoked at least 5 cigarettes/d on at least 25 of the past 30 days for at least 6 months and were interested in switching to e-cigarettes. Data were analyzed from September 18, 2019, to September 4, 2020. INTERVENTIONS 6 weeks of e-cigarette use in a choice of pod flavors (5% nicotine) along with brief education, training, and action planning to completely switch to e-cigarettes from combustible cigarettes. The control group smoked combustible cigarettes as usual. MAIN OUTCOMES AND MEASURES The primary outcome was reduction in urinary 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL) concentration at week 6. Secondary outcomes were change in urinary cotinine, expired carbon monoxide (CO), respiratory symptoms, lung function, blood pressure, past 7-day consumption of combustible cigarettes, and switching rates (e-cigarette group only) at weeks 2 and 6. RESULTS This study included 186 participants, including 92 African American participants and 94 Latinx participants. The mean (SD) age was 43.3 (12.5) years, and 75 (40.3%) were women. Participants smoked a mean (SD) of 12.1 (7.2) cigarettes/d on 6.8 (0.6) d/wk at baseline. A total of 125 participants were randomized to the e-cigarette group and 61 were randomized to the control group. At baseline, median (interquartile range) NNAL was 124 (45-197) pg/mL in the e-cigarette group and 88 (58-197) pg/mL in the control group. At week 6, the e-cigarette group had significantly greater reductions in NNAL (relative risk [RR], 0.36 [95% CI, 0.23-0.54]; P < .001), CO (RR, 0.53 [95% CI, 0.42-0.68]; P < .001), respiratory symptoms (RR, 0.63 [95% CI, 0.47-0.85]; P = .002), and number of cigarettes smoked in the past 7 days among those still smoking (RR, 0.30 [95% CI, 0.20-0.43]; P < .001) than the control group and maintained their cotinine levels (RR, 0.80 [95% CI, 0.58-1.10]; P = .17). Lung function and diastolic and systolic blood pressure remained unchanged and did not differ between groups. For participants randomized to receive e-cigarettes, 32 participants (28.1%) were exclusively using e-cigarettes at week 6, while 66 participants (57.9%) were dual using and 16 participants (14%) resumed exclusively using cigarettes. CONCLUSIONS AND RELEVANCE These findings suggest that e-cigarettes may be an inclusive harm reduction strategy for African American and Latinx smokers. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT03511001.
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Affiliation(s)
- Kim Pulvers
- Department of Psychology, California State University, San Marcos
| | - Nicole L. Nollen
- Department of Population Health, University of Kansas School of Medicine, Kansas City
| | - Myra Rice
- Department of Psychology, California State University, San Marcos
| | - Christopher H. Schmid
- Department of Biostatistics, School of Public Health, Brown University, Providence, Rhode Island
| | - Kexin Qu
- Department of Biostatistics, School of Public Health, Brown University, Providence, Rhode Island
| | - Neal L. Benowitz
- Program in Clinical Pharmacology, Division of Cardiology, Department of Medicine, University of California School of Medicine, San Francisco
| | - Jasjit S. Ahluwalia
- Center for Alcohol and Addiction Studies, Department of Behavioral and Social Sciences, School of Public Health, Department of Medicine, Alpert Medical School, Brown University, Providence, Rhode Island
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Nollen NL, Cox LS, Mayo MS, Ellerbeck EF, Ahluwalia JS. Counseling alone or in combination with nicotine replacement therapy for treatment of black non-daily smokers: a randomized trial. Addiction 2020; 115:1547-1560. [PMID: 31899564 DOI: 10.1111/add.14948] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 11/01/2019] [Accepted: 12/20/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIMS One-third of US tobacco users are non-daily smokers (NDS). Black NDS have strikingly high levels of nicotine and carcinogen exposure. No smoking cessation studies have been conducted with this high-risk group. This study compared the effectiveness in black NDS of smoking cessation counseling alone or in combination with the participant's choice of nicotine replacement therapy. DESIGN Two-arm parallel-group individually randomized clinical trial (allocation ratio of 2 : 1 intervention to control) SETTING: Academic medical and federally qualified health centers in three US cities. PARTICIPANTS Non-Hispanic black adult NDS receiving counseling with nicotine replacement therapy (C + NRT, n = 185) or counseling alone (C, n = 93). INTERVENTIONS Twelve weeks of in-person and telephone smoking cessation counseling in combination with nicotine replacement therapy (NRT; C + NRT) or counseling alone (C). All participants received five sessions of counseling; those randomized to C + NRT received their choice of nicotine gum, patch and/or lozenge after a 9-day product trial period. The target quit day was set at 2 weeks post-baseline for both groups. MEASUREMENTS Primary outcome was biochemically verified 30-day abstinence at week 12. Secondary outcomes were change in nicotine and carcinogen exposure [4-(methynitrosamino)-1-(3) pyridyle-1-butanol; NNAL] and tobacco consumption patterns. FINDINGS Abstinence was 11.4% in C + NRT and 8.6% in C [odds ratio (OR) = 1.4, 95% confidence interval (CI) = 0.6, 3.2, P = 0.48]. Both groups experienced significant reduction in NNAL (C + NRT: 53% reduction, C: 50% reduction, within-group P < 0.0001) but non-significant changes in cotinine (P = 0.69). C + NRT reported more days abstinent (P < 0.001) and fewer total cigarettes (P = 0.002) compared with C. There was no evidence of compensation with other tobacco products. CONCLUSIONS Among black non-daily smokers in the United States, there was no difference in abstinence between nicotine replacement therapy (NRT) and counseling alone. NRT led to greater increase in days abstinent and reduction in cigarettes, with no evidence of compensation from other sources of nicotine.
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Affiliation(s)
- Nicole L Nollen
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Lisa Sanderson Cox
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Matthew S Mayo
- Department of Biostatistics and Data Science, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Edward F Ellerbeck
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, RI, USA
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Nollen NL, Mayo MS, Sanderson Cox L, Benowitz NL, Tyndale RF, Ellerbeck EF, Scheuermann TS, Ahluwalia JS. Factors That Explain Differences in Abstinence Between Black and White Smokers: A Prospective Intervention Study. J Natl Cancer Inst 2020; 111:1078-1087. [PMID: 30657926 DOI: 10.1093/jnci/djz001] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 10/03/2018] [Accepted: 01/02/2019] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Black-white differences in smoking abstinence are not well understood. This trial sought to confirm previously reported differences in quitting between blacks and whites and to identify factors underlying this difference. METHODS During enrollment, 224 black and 225 white low-income smokers were stratified on race and within race on age and sex to ensure balance on these factors known to impact abstinence. The intervention included varenicline for 12 weeks and six guideline-based smoking cessation counseling sessions. The primary endpoint was cotinine-verified 7-day point prevalence smoking abstinence at week 26. A priori socioeconomic, smoking, treatment process (eg, treatment utilization, side effects, withdrawal relief), psychosocial, and biological factors were assessed to investigate race differences in abstinence. Unadjusted odds ratios (OR) were used to compare abstinence between blacks and whites. Adjusted odds ratios from logistic regression models were used to examine predictors of abstinence. All statistical tests were two-sided. RESULTS Blacks were less likely to achieve abstinence at week 26 (14.3% vs 24.4%, OR = 0.51, 95% confidence interval [CI] = 0.32 to 0.83, P = .007). Utilizing best subsets logistic regression, five factors associated with race jointly predicted abstinence: home ownership (yes/no, OR = 3.03, 95% CI = 1.72 to 5.35, P < .001), study visits completed (range = 0-6, OR = 2.81, 95% CI = 1.88 to 4.20, P < .001), income (household member/$1000, OR = 1.03, 95% CI = 1.01 to 1.06, P = .02), plasma cotinine (per 1 ng/mL, OR = 0.997, 95% CI = 0.994 to 0.999, P = .002), and neighborhood problems (range = 10-30, OR = 0.88, 95% CI = 0.81 to 0.96, P = .003). CONCLUSIONS The race difference in abstinence was fully explained by lack of home ownership, lower income, greater neighborhood problems, higher baseline cotinine, and higher visit completion, which were disproportionately represented among blacks. Findings illuminate factors that make it harder for blacks in the United States to quit smoking relative to whites and provide important areas for future studies to reduce tobacco-related health disparities.
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Scheuermann TS, Onge JMS, Ramaswamy M, Cox LS, Ahluwalia JS, Nollen NL. The Role of Neighborhood Experiences in Psychological Distress among African American and White Smokers. Race Soc Probl 2020; 12:133-144. [PMID: 34084252 PMCID: PMC8172079 DOI: 10.1007/s12552-020-09281-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Residential area characteristics and discrimination have been associated with psychological distress. Differences in these relationships across racial groups are not well understood. We examined the relative role of perceived discrimination, neighborhood problems and neighborhood cohesion/trust in explaining differences in psychological distress (indicated by anxiety and depressive symptoms) between 224 African American and 225 White smokers (income ≤ 400% federal poverty level) in a smoking cessation intervention study. Surveys were linked to US census-tract data. We conducted random intercept Poisson multi-level regression models and examined interactions between race and neighborhood experiences. African Americans had greater risk of anxiety and depressive symptoms and greater individual and neighborhood disadvantage than Whites. Controlling for objective neighborhood characteristics, when perceived discrimination and perceived neighborhood characteristics were added to the regression models the association between anxiety symptoms and race were no longer statistically significant; the association between depressive symptoms and race decreased but remained statistically significant. Lower neighborhood social cohesion/trust and greater neighborhood problems increased depressive symptoms for African Americans, but not for Whites. Perceived discrimination and neighborhood social cohesion/trust outweighed the importance of race in explaining anxiety symptoms. These findings underscore the need for multi-level interventions addressing social and environmental contexts.
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Affiliation(s)
- Taneisha S. Scheuermann
- Department of Population Health, University of Kansas
School of Medicine, Kansas City, KS, USA
| | - Jarron M. Saint Onge
- Department of Population Health, University of Kansas
School of Medicine, Kansas City, KS, USA
- Department of Sociology, University of Kansas, Lawrence,
USA
| | - Megha Ramaswamy
- Department of Population Health, University of Kansas
School of Medicine, Kansas City, KS, USA
| | - Lisa Sanderson Cox
- Department of Population Health, University of Kansas
School of Medicine, Kansas City, KS, USA
| | - Jasjit S. Ahluwalia
- Department of Behavioral and Social Sciences, Brown
University School of Public Health, Providence, RI, USA
| | - Nicole L. Nollen
- Department of Population Health, University of Kansas
School of Medicine, Kansas City, KS, USA
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El‐Boraie A, Taghavi T, Chenoweth MJ, Fukunaga K, Mushiroda T, Kubo M, Lerman C, Nollen NL, Benowitz NL, Tyndale RF. Evaluation of a weighted genetic risk score for the prediction of biomarkers of CYP2A6 activity. Addict Biol 2020; 25:e12741. [PMID: 30815984 DOI: 10.1111/adb.12741] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 12/01/2018] [Accepted: 12/16/2018] [Indexed: 12/12/2022]
Abstract
The nicotine metabolite ratio (NMR; 3-hydroxycotinine/cotinine) is an index of CYP2A6 activity. CYP2A6 is responsible for nicotine's metabolic inactivation and variation in the NMR/CYP2A6 is associated with several smoking behaviors. Our aim was to integrate established alleles and novel genome-wide association studies (GWAS) signals to create a weighted genetic risk score (wGRS) for the CYP2A6 gene for European-ancestry populations. The wGRS was compared with a previous CYP2A6 gene scoring approach designed for an alternative phenotype (C2/N2; cotinine-d2/(nicotine-d2 + cotinine-d2)). CYP2A6 genotypes and the NMR were assessed in European-ancestry participants. The wGRS training set included N = 933 smokers recruited to the Pharmacogenetics of Nicotine Addiction and Treatment clinical trial [NCT01314001]. The replication cohort included N = 196 smokers recruited to the Quit 2 Live clinical trial [NCT01836276]. Comparisons between the two CYP2A6 phenotypes and with fractional clearance were made in a laboratory-based pharmacokinetic study (N = 92 participants). In both the training and replication sets, the wGRS, which included seven CYP2A6 variants, explained 33.8% (P < 0.001) of the variance in NMR, providing improved predictive power to the NMR phenotype when compared with other CYP2A6 gene scoring approaches. NMR and C2/N2 were strongly correlated to nicotine clearance (ρ = 0.70 and ρ = 0.79, respectively; P < 0.001), and to one another (ρ = 0.82; P < 0.001); however reduced function genotypes occurred in slow NMR but throughout C2/N2. The wGRS was able to predict smoking quantity and nicotine intake, to discriminate between NMR slow and normal metabolizers (AUC = 0.79; P < 0.001), and to replicate previous NMR-stratified cessation outcomes showing unique treatment outcomes between metabolizer groups.
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Affiliation(s)
- Ahmed El‐Boraie
- Department of Pharmacology and ToxicologyUniversity of Toronto Toronto M5S 1A8 Canada
| | - Taraneh Taghavi
- Department of Pharmacology and ToxicologyUniversity of Toronto Toronto M5S 1A8 Canada
| | - Meghan J. Chenoweth
- Department of Pharmacology and ToxicologyUniversity of Toronto Toronto M5S 1A8 Canada
| | - Koya Fukunaga
- Center for Integrative Medical SciencesRIKEN Yokohama Kanagawa 230‐0045 Japan
| | - Taisei Mushiroda
- Center for Integrative Medical SciencesRIKEN Yokohama Kanagawa 230‐0045 Japan
| | - Michiaki Kubo
- Center for Integrative Medical SciencesRIKEN Yokohama Kanagawa 230‐0045 Japan
| | - Caryn Lerman
- Department of Psychiatry and Abramson Cancer CenterUniversity of Pennsylvania Philadelphia 19104 Pennsylvania
| | - Nicole L. Nollen
- Department of Preventive Medicine and Public HealthUniversity of Kansas Kansas City 66160 Kansas
| | - Neal L. Benowitz
- Departments of Medicine and Biopharmaceutical Sciences, Division of Clinical Pharmacology and Experimental Therapeutics, Medical Services and Center for Tobacco Control Research and EducationUniversity of California San Francisco 94110 California
| | - Rachel F. Tyndale
- Department of Pharmacology and ToxicologyUniversity of Toronto Toronto M5S 1A8 Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health and Division of Brain and Therapeutics, Department of PsychiatryUniversity of Toronto Toronto M6J 1H4 Canada
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Peng AR, Swardfager W, Benowitz NL, Ahluwalia JS, Lerman C, Nollen NL, Tyndale RF. Impact of early nausea on varenicline adherence and smoking cessation. Addiction 2020; 115:134-144. [PMID: 31502736 PMCID: PMC6933078 DOI: 10.1111/add.14810] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 08/16/2019] [Accepted: 08/27/2019] [Indexed: 01/07/2023]
Abstract
BACKGROUND AND AIMS Varenicline effectiveness may be related to the level of adherence, which might be reduced by adverse effects such as nausea. The aim of the study was to test a possible effect of nausea on smoking cessation outcomes mediated by adherence. DESIGN Mediation path analysis. SETTING Multiple sites within Canada and the United States. PARTICIPANTS Treatment-seeking smokers receiving varenicline from two smoking cessation clinical trials: Quit2Live (NCT01836276; n = 449) and Pharmacogenetics of Nicotine Addiction Treatment (PNAT) (NCT01314001; n = 421). MEASUREMENTS Nausea severity was collected through self-report and adherence was biologically assessed using varenicline concentrations (Quit2Live, plasma sample at week 4; PNAT, saliva sample at week 2). In Quit2Live, the end-points were cotinine-verified abstinence at weeks 4, 12 and 26. In PNAT, the end-points were carbon monoxide-verified abstinence at weeks 2, 12 and 26. FINDINGS Early nausea was not directly associated with abstinence [odds ratio (OR) ranging from 0.73-1.28; P ≥ 0.26]. However early nausea was indirectly associated with lower cessation rates at multiple timepoints (ORs ranging from 0.92-0.94; 95% CI between 0.83-0.99) in a relationship mediated by reduced varenicline adherence (assessed by plasma varenicline concentrations) in the primary trial (Quit2Live). This relationship between nausea, adherence and cessation was similar in direction but weaker in effect size (ORs ranging from 0.98-0.99; 95% CI between 0.90-1.03) in a secondary trial (PNAT), where adherence was assessed using salivary varenicline concentrations. CONCLUSIONS These data suggest that early nausea during varenicline treatment may be indirectly associated with lower likelihood of smoking cessation through reducing varenicline adherence. Differences in robustness between the trials may be due to the different biological matrices (plasma vs. saliva) and/or timing used to assess varenicline adherence. The results of the first study suggest that improved management of early nausea during varenicline treatment may positively impact smoking cessation success through increasing varenicline adherence.
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Affiliation(s)
- Annie R Peng
- Departments of Pharmacology & Toxicology, University of Toronto; 1 King’s College Circle, Toronto, ON M5S 1A8, Canada
| | - Walter Swardfager
- Departments of Pharmacology & Toxicology, University of Toronto; 1 King’s College Circle, Toronto, ON M5S 1A8, Canada;,Hurvitz Brain Sciences Program, Sunnybrook Research Institute; 2075 Bayview Avenue, Toronto, Ontario, Canada M4N 3M5
| | - Neal L Benowitz
- Department of Medicine, and Department of Bioengineering & Therapeutic Sciences, University of California, San Francisco, 1001 Potrero Ave, San Francisco, CA 94110, United States
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences, Brown University School of Public Health; 121 S Main Street Providence, RI, 02903, United States
| | - Caryn Lerman
- Norris Comprehensive Cancer Center and Keck School of Medicine, University of Southern California; 1441 Eastlake Avenue, Los Angeles, CA, 90033, United States
| | - Nicole L Nollen
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine; 3901 Rainbow Blvd, Kansas City, KS, 66160, United States
| | - Rachel F Tyndale
- Departments of Pharmacology & Toxicology, University of Toronto; 1 King’s College Circle, Toronto, ON M5S 1A8, Canada;,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), and Department of Psychiatry, University of Toronto; 100 Stokes Street BGB 3288, Toronto, ON M6J 1H4, Canada;,Corresponding author:
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Scheuermann TS, Nollen NL, Luo X, Cox LS, Ahluwalia JS. Intent to quit, quit attempts, and perceived health risk reduction among African American, Latino, and White nondaily and daily smokers in the United States. Ethn Health 2019; 24:855-873. [PMID: 29035089 PMCID: PMC6143426 DOI: 10.1080/13557858.2017.1390549] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 09/19/2017] [Indexed: 06/07/2023]
Abstract
Objective: Ethnic and racial differences in smoking patterns and behaviors have been well documented and most African American and Latino smokers are nondaily or light smokers. However, differences within smoking levels are understudied. Our primary aim was to determine whether there are racial and ethnic differences among African American, Latino, and White nondaily, light daily, and moderate to heavy daily smokers on (1) perceived health risk reduction, (2) intentions to quit, and (3) past year quit attempts. Design: Smokers were recruited through an online research panel for a cross-sectional survey (n = 2376). Sampling quotas were used to obtain equal numbers of African American, Latino, and White nondaily and daily smokers. Results: African American (59.6%) and Latino (54%) nondaily smokers were more likely than White nondaily smokers (45%) to currently limit their cigarettes per day (cpd) as a perceived health risk reduction strategy (p < 0.05). African American nondaily smokers were more likely than Latino and White nondaily smokers (p < 0.05) to limit their smoking in the past year as a perceived health risk reduction strategy (range: 0 'never' to 5 'always'; Means = 3.2, 2.9, 3.0, standard deviations [SD] = 1.1, 1.1, 1.2, respectively). African American nondaily smokers (15%) were more likely than either Latinos (7.8%) or Whites (8.5%) to intend to quit in the next 30 days (p < 0.01). African American (61.6%) and Latino (60.3%) nondaily smokers were more likely than Whites (49%) to have made a quit attempt in the past year (p < 0.01). Fewer racial and ethnic differences were found among daily smokers. Conclusions: Racial and ethnic group differences were more pronounced among nondaily smokers compared to light daily smoker and moderate to heavy daily smokers. Smoking level is an important consideration in understanding racial and ethnic variation in perceived health risk reduction and cessation-related behaviors.
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Affiliation(s)
- Taneisha S Scheuermann
- Department of Preventive Medicine and Public Health, University of Kansas Medical School , Kansas City , KS , USA
| | - Nicole L Nollen
- Department of Preventive Medicine and Public Health, University of Kansas Medical School , Kansas City , KS , USA
| | - Xianghua Luo
- Division of Biostatistics, School of Public Health, University of Minnesota , Minneapolis , MN , USA
| | - Lisa Sanderson Cox
- Department of Preventive Medicine and Public Health, University of Kansas Medical School , Kansas City , KS , USA
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences, Brown University School of Public Health , Providence , RI , USA
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Alexander AC, Nollen NL, Ahluwalia JS, Hébert ET, Businelle MS, Kendzor DE. Darker skin color is associated with a lower likelihood of smoking cessation among males but not females. Soc Sci Med 2019; 240:112562. [PMID: 31586778 PMCID: PMC6921999 DOI: 10.1016/j.socscimed.2019.112562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 08/24/2019] [Accepted: 09/19/2019] [Indexed: 11/21/2022]
Abstract
Darker skin color is associated with discrimination and unfair treatment and may contribute to persisting health disparities. This study examined whether darker skin color was associated with smoking cessation and whether this association was moderated by sex and race. This study also explored whether biological and psychosocial factors, including nicotine and cotinine concentrations, discrimination, distrust, and neuroticism, mediated this association. The data for this study came from a prospective smoking cessation intervention that included 224 Black and 225 White adults from Kansas City, Missouri. Skin color was assessed using a DermaSpectrometer to measure melanin contained within the skin. Point prevalence smoking abstinence was biochemically-verified and assessed at weeks 4 and 26. Hierarchical logistic regression analyses were conducted to evaluate hypothesized relations between skin color and smoking cessation. Interactions between race and sex with skin color were also evaluated. While skin color was not associated with smoking cessation in the overall sample or among Blacks only, results indicated that sex moderated the effect of skin color on smoking cessation after adjusting for race and other covariates. Among males, darker skin color was associated with lower odds of achieving smoking abstinence at weeks 4 (OR = 0.60 [95% CI = 0.36, 0.99]) and 26 (OR = 0.52 [95% CI = 0.29, 0.91]). Skin color did not predict smoking cessation among females. Skin color was positively correlated with discrimination (r = 0.15, p = 0.02), cynicism/distrust (r = 0.14, p = 0.03) and neuroticism (r = 0.24, p < 0.01) among males only. However, these factors did not mediate the association between skin color and smoking cessation. Skin color may contribute to cessation-related health disparities among Black males, but more research is needed to understand the psychosocial and biological mechanisms through which skin color influences tobacco cessation.
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Affiliation(s)
- Adam C Alexander
- Oklahoma Tobacco Research Center, Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
| | - Nicole L Nollen
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences and the Center for Alcohol and Addiction Studies, Brown University School of Public Health, Providence, RI, USA
| | - Emily T Hébert
- Oklahoma Tobacco Research Center, Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Michael S Businelle
- Oklahoma Tobacco Research Center, Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA; Department of Family and Preventive Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Darla E Kendzor
- Oklahoma Tobacco Research Center, Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA; Department of Family and Preventive Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
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Pulvers K, Emami AS, Nollen NL, Romero DR, Strong DR, Benowitz NL, Ahluwalia JS. Tobacco Consumption and Toxicant Exposure of Cigarette Smokers Using Electronic Cigarettes. Nicotine Tob Res 2019; 20:206-214. [PMID: 28003511 DOI: 10.1093/ntr/ntw333] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 12/08/2016] [Indexed: 11/13/2022]
Abstract
Background There is considerable debate about the benefits and risks of electronic cigarettes (ECs). To better understand the risk-benefit ratio of ECs, more information is needed about net nicotine consumption and toxicant exposure of cigarette smokers switching to ECs. Methods Forty cigarette smokers (≥1 year of smoking) interested in switching to ECs but not necessarily quitting smoking were enrolled in a 4-week observational study and provided an e-Go C non-variable battery and refillable atomizers and choice of eight flavors in 12 or 24 mg nicotine dosage. Measurement of urinary cotinine (metabolite of nicotine), 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL; a pulmonary carcinogen), and eight volatile organic compounds (VOCs) that are toxic tobacco smoke constituents was conducted at baseline and week 4. Results All participants with follow-up data (92.5%) reported using the study EC. Of the 40 smokers, 16 reported no cigarettes at week 2 (40%) and six continued to report no cigarettes at week 4 (15%). Change in nicotine intake over the 4 weeks was non-significant (p = .90). Carbon monoxide (p < .001), NNAL (p < .01) and metabolites of benzene (p < .01) and acrylonitrile (p = .001) were significantly decreased in the study sample. Smokers switching exclusively to ECs for at least half of the study period demonstrated significant reductions in metabolites of ethylene oxide (p = .03) and acrylamide (p < .01). Conclusion Smokers using ECs over 4 weeks maintained cotinine levels and experienced significant reductions in carbon monoxide, NNAL, and two out of eight measured VOC metabolites. Those who switched exclusively to ECs for at least half of the study period significantly reduced two additional VOCs. Implications This study extends current literature by measuring change in smoking dependence and disease-associated biomarkers, NNAL and a panel of eight common VOCs that are toxic tobacco smoke constituents in smokers who switch to ECs. The findings support the idea of harm reduction, however some levels of toxicant exposure are still of clinical concern, particularly for dual users. Extrapolation of these results must be careful to separate the different toxic exposure results for exclusive switchers versus dual cigarette + EC users, and not to equate harm reduction with the idea that using ECs is harmless.
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Affiliation(s)
- Kim Pulvers
- Department of Psychology, California State University San Marcos, San Marcos, CA
| | - Ashley S Emami
- Department of Psychology, California State University San Marcos, San Marcos, CA
| | - Nicole L Nollen
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS
| | - Devan R Romero
- Department of Kinesiology, California State University San Marcos, San Marcos, CA
| | - David R Strong
- Department of Family Medicine and Public Health, University of California, San Diego, CA
| | - Neal L Benowitz
- Division of Clinical Pharmacology, Department of Medicine, University of California, San Francisco School of Medicine, San Francisco, CA.,Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA
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Collins TC, Lu L, Ahluwalia JS, Nollen NL, Sirard J, Marcotte R, Post S, Zackula R. Efficacy of Community-Based Exercise Therapy Among African American Patients With Peripheral Artery Disease: A Randomized Clinical Trial. JAMA Netw Open 2019; 2:e187959. [PMID: 30768192 PMCID: PMC6484888 DOI: 10.1001/jamanetworkopen.2018.7959] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
IMPORTANCE African American individuals are 2 times more likely than non-Hispanic white individuals to have peripheral artery disease (PAD). Structured community-based exercise therapy improves walking distance among patients with PAD, but these patients require motivation to adhere to therapy. OBJECTIVE To assess whether motivational interviewing (MI) is more efficacious than Patient-Centered Assessment and Counseling for Exercise (PACE) or control to improve walking distance in African American patients with PAD. DESIGN, SETTING, AND PARTICIPANTS In this 3-group randomized clinical trial, 174 African American patients with PAD were studied from May 1, 2012, to November 30, 2016, at health care centers, churches, and health fairs in Wichita, Kansas; Kansas City, Kansas, and Kansas City, Missouri. INTERVENTIONS Patients were randomized in a 1:1:1 fashion to 1 of 3 groups (57 to MI, 57 to PACE, and 60 to control). The 2 counseling interventions were delivered biweekly for 3 months and monthly for 3 months followed by a 6-month maintenance phase with limited contact. Control participants received a mailing at 3 and 9 months. MAIN OUTCOMES AND MEASURES The primary outcome was 6-month change in 6-minute walking performance. Secondary outcomes included 12-month change in walking performance and 6- and 12-month changes in quality of life. RESULTS A total of 174 African American patients (mean [SD] age, 64.2 [11.2] years; 128 [74.0%] female) were studied. At 6 months, mean (SE) change in walking distance by group was as follows: MI, -3.42 (4.55) m; PACE, 2.74 (6.00) m; and control, -0.18 (4.40) m. At 12 months, mean (SE) change in walking distance by group was as follows: MI, -7.75 (5.50) m; PACE, 13.75 (6.13) m; and control, -1.08 (5.73) m. Comparing each of the intervention arms (MI and PACE) with the control arm, no statistically significant increases in walking distance at 6 months (MI: change, -2.10 m; 95% CI, -16.54 to 12.35 m; PACE: change, 2.31 m; 95% CI, -11.36 to 15.97 m) or 12 months (MI: change, -5.56 m; 95% CI, -21.18 to 10.06 m; PACE: change, 14.24 m; 95% CI, -1.85 to 30.34 m) were found. Compared with MI, PACE resulted in a statistically significant increase in walking distance at 12 months of 19.80 m (95% CI, 3.33-36.28 m). CONCLUSIONS AND RELEVANCE In a cohort of African American patients with PAD, MI was not efficacious in improving walking distance at 6 or 12 months. The results of this study do not support the use of MI to improve walking performance in African American patients with PAD. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT01321086.
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Affiliation(s)
- Tracie C. Collins
- Department of Preventive Medicine and Public Health, School of Medicine, University of Kansas Medical Center, Wichita
| | - Liuqiang Lu
- Department of Preventive Medicine and Public Health, School of Medicine, University of Kansas Medical Center, Wichita
| | - Jasjit S. Ahluwalia
- Department of Behavioral and Social Sciences, School of Public Health, Brown University, Providence, Rhode Island
| | - Nicole L. Nollen
- Department of Preventive Medicine and Public Health, University of Kansas Medical Center, Kansas City
| | - John Sirard
- Department of Kinesiology, Commonwealth Honors College, University of Massachusetts, Amherst
| | - Robert Marcotte
- Department of Kinesiology, Commonwealth Honors College, University of Massachusetts, Amherst
| | - Spencer Post
- Department of Preventive Medicine and Public Health, School of Medicine, University of Kansas Medical Center, Wichita
| | - Rosey Zackula
- Office of Research, School of Medicine, University of Kansas Medical Center, Wichita
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Nollen NL, Cox LS, Mayo MS, Ellerbeck EF, Madhusudhana S, Ahluwalia JS. A randomized clinical trial of counseling and nicotine replacement therapy for treatment of African American non-daily smokers: Design, accrual, and baseline characteristics. Contemp Clin Trials 2018; 70:72-82. [PMID: 29787858 PMCID: PMC6047745 DOI: 10.1016/j.cct.2018.05.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 05/14/2018] [Accepted: 05/18/2018] [Indexed: 10/16/2022]
Abstract
BACKGROUND Non-daily smokers (NDS) who smoke on some but not all days are a growing subset of United States (US) tobacco users. Racial/ethnic minorities are more likely to be NDS. African American NDS have strikingly high levels of nicotine and carcinogen exposure, making treatment of this high risk group a priority. METHODS The current study is one of three ongoing federally-funded clinical trials of NDS and, to our knowledge the only RCT focused on racial/ethnic minority NDS. The design has been guided by input from Patient and Stakeholder Advisory Panels who helped develop the research questions, design the intervention, and select the outcomes. The objective is to compare the effectiveness of smoking cessation counseling alone (C) or smoking cessation counseling plus participant's choice of nicotine replacement therapy (NRT; C + NRT) for African American NDS. Two-hundred seventy-eight African American NDS will be randomized in a 2:1 fashion to C + NRT or C. All participants receive five sessions of smoking cessation counseling; those randomized to C + NRT receive their choice of nicotine gum, patch, and/or lozenge. Treatment in both groups lasts for 12 weeks. We hypothesize that C + NRT will be more effective than C on the primary outcome of biochemically-confirmed abstinence from smoking at week 12. Secondary aims will compare C + NRT and C on patient- and provider-desired outcomes including abstinence from smoking at week 26, change in biochemically-verified nicotine and carcinogen exposure, days abstinent, and treatment process measures (e.g., NRT use and side effects). Predictors of abstinence will also be explored. DISCUSSION Findings will illuminate effective treatment options for African American NDS and contribute to development of evidence-based guidelines for treating the 8.9 million US adult NDS for whom no guidelines currently exist. TRIAL REGISTRATION NUMBER ClinicalTrials.gov: NCT02244918.
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Affiliation(s)
- Nicole L Nollen
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS, United States.
| | - Lisa Sanderson Cox
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS, United States.
| | - Matthew S Mayo
- Department of Biostatistics, University of Kansas School of Medicine, Kansas City, KS, United States.
| | - Edward F Ellerbeck
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS, United States.
| | - Sheshadri Madhusudhana
- Department of Hematology/Oncology, Truman Medical Center, Kansas City, MO, United States.
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences, Brown University, Providence, RI, United States.
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Pulvers K, Cupertino AP, Scheuermann TS, Sanderson Cox L, Ho YY, Nollen NL, Cuellar R, Ahluwalia JS. Daily and Nondaily Smoking Varies by Acculturation among English-Speaking, US Latino Men and Women. Ethn Dis 2018; 28:105-114. [PMID: 29725195 DOI: 10.18865/ed.28.2.105] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Background Higher smoking prevalence and quantity (cigarettes per day) has been linked to acculturation in the United States among Latinas, but not Latino men. Our study examines variation between a different and increasingly important target behavior, smoking level (nondaily vs daily) and acculturation by sex. Methods An online English-language survey was administered to 786 Latino smokers during July through August 2012. The Brief Acculturation Rating Scale for Mexican Americans-II (ARSMA-II) and other acculturation markers were used. Multinomial logistic regression models were implemented to assess the association between smoking levels (nondaily, light daily, and moderate/heavy daily) with acculturation markers. Results Greater ARMSA-II scores (relative risk ratio, RRR=.81, 95% CI: .72-.91) and being born inside the United States (RRR=.42, 95% CI: .24-.74) were associated with lower relative risk of nondaily smoking. Greater Latino orientation (RRR=1.29, 95% CI: 1.11-1.48) and preference for Spanish language (RRR=1.06, 95% CI: 1.02-1.10) and media (RRR=1.12, 95% CI: 1.05-1.20) were associated with higher relative risk of nondaily smoking. The relationship between acculturation and smoking level did not differ by sex. Conclusion This study found that among both male and female, English-speaking Latino smokers, nondaily smoking was associated with lower acculturation, while daily smoking was linked with higher acculturation.
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Affiliation(s)
- Kim Pulvers
- Department of Psychology, California State University San Marcos, San Marcos, CA
| | - A Paula Cupertino
- Center for Cancer Disparities, Hackensack Meridian Health, Hackensack, NJ
| | - Taneisha S Scheuermann
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS
| | - Lisa Sanderson Cox
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS
| | - Yen-Yi Ho
- Department of Statistics, University of South Carolina, Columbia, SC
| | - Nicole L Nollen
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS
| | - Ruby Cuellar
- Department of Psychology, California State University San Marcos, San Marcos, CA
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, RI
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Peng AR, Morales M, Wileyto EP, Hawk LW, Cinciripini P, George TP, Benowitz NL, Nollen NL, Lerman C, Tyndale RF, Schnoll R. Measures and predictors of varenicline adherence in the treatment of nicotine dependence. Addict Behav 2017; 75:122-129. [PMID: 28728040 DOI: 10.1016/j.addbeh.2017.07.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 06/28/2017] [Accepted: 07/08/2017] [Indexed: 11/15/2022]
Abstract
INTRODUCTION While adherence to medication in smoking cessation clinical trials is strongly associated with clinical outcome, very few studies have evaluated the validity of pill count as a measure of adherence relative to a biological assay, and evaluated a broad range of correlates of adherence. METHODS In a smoking cessation clinical trial of varenicline, we compared pill counts collected over 4 different time periods to varenicline salivary levels taken after 2weeks of treatment, as well as evaluated predictors of adherence to varenicline. RESULTS Using a binary measure of adherence based on salivary varenicline levels, adherence was higher among older, white, and more educated participants. Relative to 3, 7, and 14-day pill count, 12-week pill count was the only significant measure able to discriminate adherence as defined by salivary varenicline levels (assessed by area under the receiver operating characteristic curve; AUC=0.59, p=0.004). Seventy-two percent of participants who indicated adherence on 12-week pill count were classified as adherent based on varenicline saliva levels (sensitivity=0.80; specificity=0.40). There was modest variability in the relationship between 12-week pill count and varenicline levels across race and rate of nicotine metabolism. Lastly, General Estimating Equation models demonstrated that longitudinal changes in withdrawal, craving, negative and positive affect, and side effect count and severity were not related to adherence based on salivary varenicline levels. CONCLUSIONS These results indicate that 12-week pill count was the best, albeit a relatively weak, measure of varenicline adherence; additional factors associated with treatment adherence need to be identified.
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Affiliation(s)
- Annie R Peng
- Department of Pharmacology & Toxicology, University of Toronto, 1 King's College Cir, Toronto, ON M5S 1A8, Canada.
| | - Mark Morales
- Perelman School of Medicine, University of Pennsylvania, 3400 Civic Center Blvd, Philadelphia, PA 19104, United States.
| | - E Paul Wileyto
- Department of Biostatistics & Epidemiology, University of Pennsylvania, 423 Guardian Dr, Philadelphia, PA 19104, United States.
| | - Larry W Hawk
- Department of Psychology, State University of New York at Buffalo, 230 Park Hall, Buffalo, NY 14260-4110, United States.
| | - Paul Cinciripini
- Department of Behavioral Science, The University of Texas MD Anderson Cancer Center, 1155 Pressler St, Houston, TX 77030, United States.
| | - Tony P George
- Addictions Division, Centre for Addiction and Mental Health and Division of Brain and Therapeutics, Department of Psychiatry, University of Toronto, 250 College Street, Toronto, ON M5T 1R8, Canada.
| | - Neal L Benowitz
- Department of Medicine, University of California, San Francisco, 1001 Potrero Ave, San Francisco, CA 94110, United States; Department of Bioengineering & Therapeutic Sciences, University of California, San Francisco, 1001 Potrero Ave, San Francisco, CA 94110, United States.
| | - Nicole L Nollen
- Department of Preventive Medicine & Public Health, University of Kansas School of Medicine, 3901 Rainbow Blvd., Kansas City, KS 66160, United States.
| | - Caryn Lerman
- Department of Psychiatry, Annenberg School for Communication, Abramson Cancer Center, University of Pennsylvania, 3535 Market Street, Philadelphia, PA 19104, United States.
| | - Rachel F Tyndale
- Department of Pharmacology & Toxicology, University of Toronto, 1 King's College Cir, Toronto, ON M5S 1A8, Canada; Addictions Division, Centre for Addiction and Mental Health and Division of Brain and Therapeutics, Department of Psychiatry, University of Toronto, 250 College Street, Toronto, ON M5T 1R8, Canada.
| | - Robert Schnoll
- Department of Psychiatry, Abramson Cancer Center, University of Pennsylvania, 3535 Market Street, Philadelphia, PA 19104, United States.
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Nollen NL, Mayo MS, Clark L, Cox LS, Khariwala SS, Pulvers K, Benowitz NL, Ahluwalia JS. Tobacco toxicant exposure in cigarette smokers who use or do not use other tobacco products. Drug Alcohol Depend 2017; 179:330-336. [PMID: 28843083 PMCID: PMC5599364 DOI: 10.1016/j.drugalcdep.2017.07.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 07/03/2017] [Accepted: 07/21/2017] [Indexed: 01/20/2023]
Abstract
BACKGROUND Non-cigarette other tobacco products (OTP; e.g., cigarillos, little cigars) are typically used in combination with cigarettes, but limited data exists on the tobacco toxicant exposure profiles of dual cigarette-OTP (Cig-OTP) users. This study examined biomarkers of nicotine and carcinogen exposure in cigarette smokers who used or did not use OTP. METHODS 111 Cig-OTP and 111 cigarette only (Cig Only) users who smoked equivalent cigarettes per day were matched on age (< 40, >=40), race (African American, White), and gender. Participants reported past 7-day daily use of cigarettes and OTP and provided urine for nicotine, cotinine, total nicotine equivalents (TNE) and total NNAL concentrations. RESULTS Cig-OTP users reported greater past 7-day tobacco use (15.9 versus 13.0 products/day, p<0.01) but had significantly lower creatinine-normalized nicotine (606 versus 1301ng/mg), cotinine (1063 versus 2125ng/mg), TNE (28 versus 57 nmol/mg) and NNAL (251 versus 343pg/mg) than Cig Only users (p<0.001). CONCLUSIONS Cig-OTP users had lower levels of nicotine and metabolites of a lung carcinogen relative to Cig-Only users, but concentrations of toxicants among Cig-OTP users were still at levels that place smokers at great risk from the detrimental health effects of smoking. IMPACT Our study finds that nicotine and carcinogen exposure in Cig-OTP users are lower compared to cigarette only users, but still likely to be associated with substantial harm. A better understanding of why toxicant levels may be lower in Cig-OTP is an important area for future study.
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Affiliation(s)
- Nicole L Nollen
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, 3901 Rainbow Boulevard, Kansas City, KS, 66160, United States.
| | - Matthew S Mayo
- Department of Biostatistics, University of Kansas School of Medicine, 3901 Rainbow Boulevard, Kansas City, KS, 66160, United States.
| | - Lauren Clark
- Department of Biostatistics, University of Kansas School of Medicine, 3901 Rainbow Boulevard, Kansas City, KS, 66160, United States.
| | - Lisa Sanderson Cox
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, 3901 Rainbow Boulevard, Kansas City, KS, 66160, United States.
| | - Samir S Khariwala
- Department of Otolaryngology-Head and Neck Surgery, University of Minnesota, 420 Delaware Street S.E., Minneapolis, MN, 55455, United States.
| | - Kim Pulvers
- Department of Psychology, California State University San Marcos, 333 S. Twin Oaks Valley Road, San Marcos, CA, 92096, United States.
| | - Neal L Benowitz
- Division of Clinical Pharmacology, Departments of Medicine and Bioengineering and Therapeutic Sciences, University of California, San Francisco School of Medicine, 1001 Potrero Avenue, San Francisco, CA, 94110, United States.
| | - Jasjit S Ahluwalia
- Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, RI 02912, United States.
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Nollen NL, Ahluwalia JS, Lei Y, Yu Q, Scheuermann TS, Mayo MS. Adult Cigarette Smokers at Highest Risk for Concurrent Alternative Tobacco Product Use Among a Racially/Ethnically and Socioeconomically Diverse Sample. Nicotine Tob Res 2016; 18:386-94. [PMID: 25999383 PMCID: PMC6220834 DOI: 10.1093/ntr/ntv110] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 05/12/2015] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Rates of alternative tobacco product use (ATPs; eg, cigars, cigarillos, pipes) among cigarette smokers are on the rise but little is known about the subgroups at highest risk. This study explored interactions between demographic, tobacco, and psychosocial factors to identify cigarette smokers at highest risk for ATP use from a racially/ethnically and socioeconomically diverse sample of adult smokers across the full smoking spectrum (nondaily, daily light, daily heavy). METHODS Two-thousand three-hundred seventy-six adult cigarette smokers participated in an online cross-sectional survey. Quotas ensured equal recruitment of African American (AA), white (W), Hispanic/Latino (H) as well as daily and nondaily smokers. Classification and Regression Tree modeling was used to identify subgroups of cigarette smokers at highest risk for ATP use. RESULTS 51.3% were Cig+ATP smokers. Alcohol for men and age, race/ethnicity, and discrimination for women increased the probability of ATP use. Strikingly, 73.5% of men screening positive for moderate to heavy drinking and 62.2% of younger (≤45 years) African American/Hispanic/Latino women who experienced regular discrimination were Cig+ATP smokers. CONCLUSIONS Screening for concurrent ATP use is necessary for the continued success of tobacco cessation efforts especially among male alcohol users and racial/ethnic minority women who are at greatest risk for ATP use.
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Affiliation(s)
- Nicole L Nollen
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS;
| | - Jasjit S Ahluwalia
- Department of Epidemiology, Rutgers School of Public Health, Piscataway, NJ
| | - Yang Lei
- Department of Biostatistics, University of Kansas School of Medicine, Kansas City, KS
| | - Qing Yu
- Department of Biostatistics, University of Kansas School of Medicine, Kansas City, KS
| | - Taneisha S Scheuermann
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS
| | - Matthew S Mayo
- Department of Biostatistics, University of Kansas School of Medicine, Kansas City, KS
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Nollen NL, Cox LS, Yu Q, Ellerbeck EF, Scheuermann TS, Benowitz NL, Tyndale RF, Mayo MS, Ahluwalia JS. A clinical trial to examine disparities in quitting between African-American and White adult smokers: Design, accrual, and baseline characteristics. Contemp Clin Trials 2016; 47:12-21. [PMID: 26667382 PMCID: PMC4818177 DOI: 10.1016/j.cct.2015.12.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 11/24/2015] [Accepted: 12/03/2015] [Indexed: 01/21/2023]
Abstract
BACKGROUND African-Americans smoke fewer cigarettes per day than Whites but experience greater smoking attributable morbidity and mortality. African-American-White differences may also exist in cessation but rigorously designed studies have not been conducted to empirically answer this question. METHODS/DESIGN Quit2Live is, to our knowledge, the first head-to-head trial designed with the primary aim of examining African-American-White disparities in quitting smoking. Secondary aims are to identify mechanisms that mediate and/or moderate the relationship between race and quitting. The study is ongoing. Study aims are accomplished through a 5-year prospective cohort intervention study designed to recruit equal numbers of African-Americans (n=224) and Whites (n=224) stratified on age (<40, ≥40) and gender, key factors known to impact cessation, and all within a restricted income range (≤400% federal poverty level). All participants will receive 12 weeks of varenicline in combination with smoking cessation counseling. The primary outcome is cotinine-verified 7-day point prevalence abstinence from smoking at week 26. Secondary outcomes are cotinine-verified 7-day point prevalence abstinence from smoking at weeks 4 and 12. DISCUSSION Findings from Quit2Live will not only address if African-American-White disparities in quitting smoking exist but, more importantly, will examine mechanisms underlying the difference. Attention to proximal, modifiable mechanisms (e.g., adherence, response to treatment, depression, stress) maximizes Quit2Live's potential to inform practice. Findings will provide an empirically-derived approach that will guide researchers and clinicians in identifying specific factors to address to improve cessation outcomes and reduce tobacco-related morbidity and mortality in African-American and White smokers. TRIAL REGISTRATION NUMBER ClinicalTrials.gov: NCT01836276.
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Affiliation(s)
- Nicole L Nollen
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, Kansas, United States.
| | - Lisa Sanderson Cox
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, Kansas, United States.
| | - Qing Yu
- Department of Biostatistics, University of Kansas School of Medicine, Kansas City, Kansas, United States.
| | - Edward F Ellerbeck
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, Kansas, United States.
| | - Taneisha S Scheuermann
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, Kansas, United States.
| | - Neal L Benowitz
- Division of Clinical Pharmacology and Experimental Therapeutics, University of California, San Francisco, San Francisco, California, United States; Department of Medicine, University of California, San Francisco, San Francisco, California, United States; Department of Bioengineering, University of California, San Francisco, San Francisco, California, United States; Department of Therapeutic Sciences, University of California, San Francisco, San Francisco, California, United States.
| | - Rachel F Tyndale
- Center for Addiction and Mental Health, University of Toronto, Toronto, Ontario, Canada; Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada; Department of Pharmacology, University of Toronto, Toronto, Ontario, Canada.
| | - Matthew S Mayo
- Department of Biostatistics, University of Kansas School of Medicine, Kansas City, Kansas, United States.
| | - Jasjit S Ahluwalia
- Department of Epidemiology, Rutgers School of Public Health, Piscataway, New Jersey, United States.
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Scheuermann TS, Nollen NL, Cox LS, Reitzel LR, Berg CJ, Guo H, Resnicow K, Ahluwalia JS. Smoking dependence across the levels of cigarette smoking in a multiethnic sample. Addict Behav 2015; 43:1-6. [PMID: 25498030 DOI: 10.1016/j.addbeh.2014.11.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 11/03/2014] [Accepted: 11/18/2014] [Indexed: 11/19/2022]
Abstract
OBJECTIVES The Brief Wisconsin Inventory of Smoking Dependence Motives (WISDM) is a multi-dimensional smoking dependence measure that assesses primary dependence motives (PDM; e.g., core dependence marked by tolerance, craving) and secondary dependence motives (SDM; e.g., auxiliary dependence motives such as cognitive enhancement, weight control). However, the relationship between PDM, SDM, and smoking level remains unclear. Thus, we examined these scales across smoking levels in a diverse sample of smokers. METHODS Participants were 2376 African American, Latino, and non-Hispanic White smokers recruited using an online panel research company. The sample included 297 native nondaily smokers (never smoked daily), 297 converted nondaily smoker (previously smoked daily for ≥six months), 578 light daily smokers (≤10 cigarettes per day [cpd]), and 597 moderate to heavy daily smokers (>10cpd). METHODS Results of a multinomial logistic regression showed that for each unit increase in SDM, after controlling for PDM, the odds of being a native nondaily, converted nondaily or light smoker vs. moderate to heavy smoker increased by 29% to 56% (ps<0.001). In the model, higher PDM scores were associated with lower odds of being a native nondaily, converted nondaily, or light smoker vs. a moderate to heavy daily smoker (ps<0.001). CONCLUSION Nondaily and light smokers endorse higher secondary dependence motives relative to their primary dependence motives. Smoking cessation trials for nondaily and light smokers might address these secondary motives within the context of counseling intervention to enhance abstinence.
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Affiliation(s)
- Taneisha S Scheuermann
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS, USA.
| | - Nicole L Nollen
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Lisa Sanderson Cox
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Lorraine R Reitzel
- College of Education, Department of Educational Psychology, University of Houston, Houston, TX, USA
| | - Carla J Berg
- Department of Behavioral Sciences and Health Education, Emory University School of Public Health, Atlanta, GA, USA
| | - Hongfei Guo
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Ken Resnicow
- Department of Health Behavior & Health Education, University of Michigan, School of Public Health, Ann Arbor, MI, USA
| | - Jasjit S Ahluwalia
- Department of Medicine and Center for Health Equity, University of Minnesota Medical School, Minneapolis, MN, USA
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Nollen NL, Mayo MS, Carlson SE, Rapoff MA, Goggin KJ, Ellerbeck EF. Mobile technology for obesity prevention: a randomized pilot study in racial- and ethnic-minority girls. Am J Prev Med 2014; 46:404-8. [PMID: 24650843 PMCID: PMC3962588 DOI: 10.1016/j.amepre.2013.12.011] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 12/05/2013] [Accepted: 12/13/2013] [Indexed: 10/25/2022]
Abstract
BACKGROUND Mobile technologies have wide-scale reach and disseminability, but no known studies have examined mobile technologies as a stand-alone tool to improve obesity-related behaviors of at-risk youth. PURPOSE To test a 12-week mobile technology intervention for use and estimate effect sizes for a fully powered trial. METHODS Fifty-one low-income, racial/ethnic-minority girls aged 9-14 years were randomized to a mobile technology (n=26) or control (n=25) condition. Both conditions lasted 12 weeks and targeted fruits/vegetables (FVs; Weeks 1-4); sugar-sweetened beverages (SSBs; Weeks 5-8), and screen time (Weeks 9-12). The mobile intervention prompted real-time goal setting and self-monitoring and provided tips, feedback, and positive reinforcement related to the target behaviors. Controls received the same content in a written manual but no prompting. Outcomes included device utilization and effect size estimates of FVs, SSBs, screen time, and BMI. Data were collected and analyzed in 2011-2012. RESULTS Mobile technology girls used the program on 63% of days and exhibited trends toward increased FVs (+0.88, p=0.08) and decreased SSBs (-0.33, p=0.09). The adjusted difference between groups of 1.0 servings of FVs (p=0.13) and 0.35 servings of SSBs (p=0.25) indicated small to moderate effects of the intervention (Cohen's d=0.44 and -0.34, respectively). No differences were observed for screen time or BMI. CONCLUSIONS A stand-alone mobile app may produce small to moderate effects for FVs and SSBs. Given the extensive reach of mobile devices, this pilot study demonstrates the need for larger-scale testing of similar programs to address obesity-related behaviors in high-risk youth.
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Affiliation(s)
- Nicole L Nollen
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, Kansas.
| | - Matthew S Mayo
- Department of Biostatistics, University of Kansas School of Medicine, Kansas City, Kansas
| | - Susan E Carlson
- Department of Dietetics and Nutrition, University of Kansas School of Medicine, Kansas City, Kansas
| | - Michael A Rapoff
- Department of Pediatrics, University of Kansas School of Medicine, Kansas City, Kansas
| | - Kathy J Goggin
- Health Services and Outcomes Research, Children's Mercy School of Pharmacy, University of Missouri-Kansas City, Kansas City, Missouri
| | - Edward F Ellerbeck
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, Kansas
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Abstract
INTRODUCTION Smokers who report quitting without prior planning have been shown to report longer abstinence compared with those who planned. Little is known about unplanned quitting (UQ) among U.S. smokers, minorities, or nondaily and light smokers. METHODS Using an online panel, we recruited equal numbers of Black, White, and Latino nondaily, light daily, and moderate/heavy daily smokers. Of the 1,127 who reported a past-year quit attempt, we queried whether it was planned and the maximum number of days abstinent. RESULTS Overall, 38% reported that their last quit attempt was unplanned. The impact of planned versus unplanned quitting interacted with smoking level and race. Among White moderate/heavy smokers, mean days abstinent was 99 for those who reported an unplanned quit attempt compared with 60 days for those who reported a planned attempt (p = .02). Among Black moderate/heavy smokers, the mean days abstinent was higher among those whose last attempt was planned, 92 days, compared with 56 days among those whose last attempt was unplanned (p = .09). The pattern among Latinos resembled Whites but was not significant. Results remained after adjusting for confounds such as age, gender, education, income, time to first cigarette, and menthol use. There were no significant differences in abstinence by quit type for light or nondaily smokers. CONCLUSIONS Future studies are needed to elucidate why UQ appears to have differential effectiveness across racial/ethnic groups and different levels of cigarette use. Research examining the impact of UQ on long-term quitting, which is not addressed here, is needed.
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Affiliation(s)
- Ken Resnicow
- Department of Health Behavior and Health Education, University of Michigan, School of Public Health, Ann Arbor, MI
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Khariwala SS, Scheuermann TS, Berg CJ, Hayes RB, Nollen NL, Thomas JL, Guo H, Ahluwalia JS, Benowitz NL. Cotinine and tobacco-specific carcinogen exposure among nondaily smokers in a multiethnic sample. Nicotine Tob Res 2013; 16:600-5. [PMID: 24297808 DOI: 10.1093/ntr/ntt194] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND Nondaily smoking has increased among current U.S. smokers during the past decade and is practiced by a significant percentage of smokers. Although research in nondaily smoking has grown, little is known about levels of exposure to tobacco toxicants among nondaily smokers and their variation across ethnic groups. METHODS We examined urinary levels of cotinine and a tobacco-specific nitrosamine (NNAL) in community participants. Associations between the biomarker data and smoking characteristics were evaluated with Spearman's correlation analysis. RESULTS Participants included 28 Blacks, 4 Latinos, and 25 Whites who smoked at least 1 cigarette on 4-24 days in the past 30 days. Participants averaged 3.3 (SD = 2.1) cigarettes per day (cpd) on days smoked, they smoked an average of 13.0 (SD = 5.4) days in the past month, and they smoked nondaily for 10.5 (SD = 10.5) years. Median levels of creatinine-normalized cotinine and NNAL were 490.9 ng/mg and 140.7 pg/mg, respectively. NNAL and cotinine were highly correlated (r = .84); NNAL and cotinine were modestly correlated with cpd (r = .39 and r = .34; all p values <.05). The number of days smoked per month was not associated with any biomarker levels. CONCLUSIONS Our findings demonstrate that nondaily smokers are, on average, exposed to significant levels of nicotine and carcinogenic nitrosamines, with exposures of 40%-50% of those seen in daily smokers. This level of exposure suggests a significant health risk. Nicotine and carcinogen exposure is most closely related to number of cigarettes smoked per day but not to number of days per month of smoking.
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Affiliation(s)
- Samir S Khariwala
- Otolaryngology-Head and Neck Surgery, University of Minnesota, Minneapolis, MN
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Nollen NL, Hutcheson T, Carlson S, Rapoff M, Goggin K, Mayfield C, Ellerbeck E. Development and functionality of a handheld computer program to improve fruit and vegetable intake among low-income youth. Health Educ Res 2013; 28:249-264. [PMID: 22949499 PMCID: PMC3594927 DOI: 10.1093/her/cys099] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Accepted: 08/08/2012] [Indexed: 06/01/2023]
Abstract
Mobile technologies hold promise for improving diet and physical activity, but little attention is given to creating programs that adolescents like and will use. This study developed a personal digital assistant (PDA) program to promote increased intake of fruits and vegetables (FV) in predominately low-income, ethnic minority girls. This study used a three-phase community-engaged process, including (i) engagement of a Student Advisory Board (SAB) to determine comfort with PDAs; (ii) early testing of Prototype I and rapid re-design by the SAB and (iii) feasibility testing of Prototype II in a new sample of girls. Phase 1 results showed that girls were comfortable with the PDA. Testing of Prototype I in Phase 2 showed that acceptability was mixed, with girls responding to 47.3% of the prompts. Girls wanted more reminders, accountability in monitoring FV, help in meeting daily goals and free music downloads based on program use. The PDA was reprogrammed and testing of Prototype II in Phase 3 demonstrated marked improvement in use (78.3%), increases in FV intake (1.8 ± 2.6 daily servings) and good overall satisfaction. Findings suggest that mobile technology designed with the early input of youth is a promising way to improve adolescent health behaviors.
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Affiliation(s)
- Nicole L Nollen
- Department of Preventive Medicine and Public Health, Kansas University School of Medicine, Kansas City, KS 66160, USA.
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Faseru B, Nollen NL, Mayo MS, Krebill R, Choi WS, Benowitz NL, Tyndale RF, Okuyemi KS, Ahluwalia JS, Sanderson Cox L. Predictors of cessation in African American light smokers enrolled in a bupropion clinical trial. Addict Behav 2013; 38:1796-803. [PMID: 23254230 PMCID: PMC3558614 DOI: 10.1016/j.addbeh.2012.11.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Revised: 11/08/2012] [Accepted: 11/21/2012] [Indexed: 10/27/2022]
Abstract
BACKGROUND This is the first study to examine predictors of successful cessation in African American (AA) light smokers treated within a placebo-controlled trial of bupropion. METHODS We analyzed data from a randomized, double-blind, placebo-controlled trial of bupropion and health education for 540 African American light smokers. African American light smokers (≤10 cigarettes per day, cpd) were randomly assigned to receive 150mg bid bupropion SR (n=270) or placebo (n=270) for 7weeks. All participants received health education counseling at weeks 0, 1, 3, 5 and 7. Using chi-square tests, two sample t-tests, and multiple logistic regression analyses, we examined baseline psychosocial and smoking characteristics as predictors of cotinine-verified 7-day point prevalence smoking abstinence among study participants at the end treatment (Week 7) and at the end of follow-up (Week 26). RESULTS Participants who received bupropion were significantly more likely to quit smoking compared to those who received placebo (OR=2.72, 95% CI=1.60-4.62, P=0.0002). Greater study session attendance (OR=2.47, 95% CI=1.76-3.46, P=0.0001), and smoking non-menthol cigarettes increased the likelihood of quitting (OR=1.84, 95% CI=1.01-3.36, P=0.05); while longer years of smoking (OR=0.98, 95% CI=0.96-1.00, P=0.05) and higher baseline cotinine (OR=0.97, 95% CI=0.95-0.99, P=0.002) significantly reduced the odds of quitting at Week 7. Conversely, at the end of follow-up (Week 26), treatment with bupropion vs. placebo (OR=1.14, 95% CI=0.65-2.02, P=0.64) was not significantly associated with quitting and type of cigarette smoked (menthol vs. non-menthol) did not appear in the final logistic regression model. Greater study session attendance (OR=1.96, 95% CI=1.44-2.66, P=0.0001); BMI (OR=1.03, 95% CI=1.00-1.07, P=0.04); and weight efficacy (OR=1.03, 95% CI=1.01-1.05, P=0.01) increased the likelihood of quitting at Week 26. Similar to our findings at Week 7, longer years of smoking (OR=0.96, 95% CI=0.94-0.99, P=0.01) and higher baseline cotinine (OR=0.97, 95% CI=0.95-0.99, P=0.02) significantly reduced the odds of quitting at Week 26. CONCLUSIONS Baseline cotinine levels, number of years smoked and study session attendance are associated with both short- and long-term smoking cessation, while bupropion and the type of cigarette smoked were associated with quitting on short term only.
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Affiliation(s)
- Babalola Faseru
- Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, KS 66160, USA.
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Buchanan TS, Sanderson Cox L, Thomas JL, Nollen NL, Berg CJ, Mayo MS, Ahluwalia JS. Perceived treatment assignment and smoking cessation in a clinical trial of bupropion versus placebo. Nicotine Tob Res 2013; 15:567-71. [PMID: 22949570 PMCID: PMC3611997 DOI: 10.1093/ntr/nts143] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Accepted: 05/08/2012] [Indexed: 11/14/2022]
Abstract
INTRODUCTION Psychoactive effects of smoking cessation medi cations such as bupropion may allow participants in smoking cessation clinical trials to correctly guess their treatment assignment at rates greater than chance. Previous research has found an association between perceived treatment assignment and smoking cessation rates among moderate to heavy smokers (≥ 10 cigarettes per day [cpd]) in two bupropion clinical trials. METHODS The aim of this study was to determine the impact of perceived treatment assignment on end-of-treatment cotinine-verified smoking abstinence at Week 7 and Week 26 among African American light smokers (≤ 10 cpd) enrolled in a double-blind, placebo-controlled study of bupropion. Participants (n = 390) included in this study reported their perceived treatment assignment on the end-of-treatment (Week 7) survey. RESULTS Participants were predominantly female (63.1%), 48.1 years of age (SD = 11.2), and smoked an average of 8 cpd (SD = 2.5). Participants given bupropion were more likely to correctly guess their treatment assignment (69%; 140/203) than those assigned to placebo (51.3%; 96/187) (p < .0001). After adjusting for treatment condition, participants who perceived assignment to bupropion versus placebo were not more likely to be abstinent than those who perceived assignment to placebo at Week 7 or at Week 26. The interaction between treatment and perceived treatment assignment was also nonsignificant. CONCLUSIONS Consistent with two previous studies testing bupropion, participants assigned to bupropion were more likely to correctly guess their treatment assignment than those assigned to placebo. However, in contrast to previous studies with heavier smokers, perceived treatment assignment did not significantly impact cotinine-verified abstinence in light smokers.
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Affiliation(s)
- Taneisha S Buchanan
- Department of Medicine and Center for Health Equity, University of Minnesota Minneapolis, MN 55414, USA.
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Buchanan TS, Berg CJ, Cox LS, Nazir N, Benowitz NL, Yu L, Yturralde O, Jacob P, Choi WS, Ahluwalia JS, Nollen NL. Adherence to varenicline among African American smokers: an exploratory analysis comparing plasma concentration, pill count, and self-report. Nicotine Tob Res 2012; 14:1083-91. [PMID: 22367976 DOI: 10.1093/ntr/ntr333] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Measuring adherence to smoking cessation pharmacotherapy is important to evaluating its effectiveness. Blood levels are considered the most accurate measure of adherence but are invasive and costly. Pill counts and self-report are more practical, but little is known about their relationship to blood levels. This study compared the validity of pill count and self-report against plasma varenicline concentration for measuring pharmacotherapy adherence. METHODS Data were obtained from a randomized pilot study of varenicline for smoking cessation among African American smokers. Adherence was measured on Day 12 via plasma varenicline concentration, pill count, 3-day recall, and a visual analogue scale (VAS; adherence was represented on a line with two extremes "no pills" and "all pills"). RESULTS The sample consisted of 55 African American moderate to heavy smokers (average 16.8 cigarettes/day, SD = 5.6) and 63.6% were female. Significant correlations (p < .05) were found between plasma varenicline concentration and pill count (r = .56), 3-day recall (r = .46), and VAS (r = .29). Using plasma varenicline concentration of 2.0 ng/ml as the cutpoint for adherence, pill count demonstrated the largest area under the receiver operating characteristic curve (AUC = 0.85, p = .01) and had 88% sensitivity (95% CI = 75.0-95.0) and 80% specificity (95% CI = 30.0-99.0) for detecting adherence. CONCLUSIONS Of 3 commonly used adherence measures, pill count was the most valid for identifying adherence in this sample of African American smokers. Pill count has been used across other health domains and could be incorporated into treatment to identify nonadherence, which, in turn, could maximize smoking cessation pharmacotherapy use and improve abstinence rates.
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Affiliation(s)
- Taneisha S Buchanan
- Department of Medicine and Center for Health Equity, University of Minnesota, Minneapolis, MN 55414, USA.
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Cox LS, Nollen NL, Mayo MS, Choi WS, Faseru B, Benowitz NL, Tyndale RF, Okuyemi KS, Ahluwalia JS. Bupropion for smoking cessation in African American light smokers: a randomized controlled trial. J Natl Cancer Inst 2012; 104:290-8. [PMID: 22282543 DOI: 10.1093/jnci/djr513] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Previous research demonstrated the efficacy of sustained release bupropion (bupropion SR) for smoking cessation in whites as well as moderate to heavy (≥10 cigarettes per day [CPD]) African American smokers. We evaluated whether bupropion SR was effective for smoking cessation among African American light smokers (≤10 CPD). METHODS A randomized, double-blind placebo-controlled trial was conducted from December 27, 2007, to May 13, 2010. All participants were African American light smokers (≤10 CPD), aged 18 years or older. Participants were randomly assigned to receive 300 mg bupropion SR (150 mg once daily for 3 days and then 150 mg twice daily) (n = 270 participants) or placebo (n = 270 participants) for 7 weeks, and up to six sessions of health education counseling. Serum cotinine was measured at baseline (week 0). The primary outcome was salivary cotinine-verified 7-day point prevalence smoking abstinence at week 26; a cut point of 15 ng/mL differentiated smokers from nonsmokers. Salivary cotinine-verified smoking abstinence at end of medication treatment at week 7 was also examined. Odds ratios (OR) for smoking abstinence and 95% confidence intervals (CIs) were calculated using logistic regression models. All statistical tests were two-sided. RESULTS Participants at baseline visit (week 0) smoked an average of 8.0 CPD and had a mean serum cotinine level of 275.8 ng/mL (SD = 155.8 ng/mL); most used menthol cigarettes (83.7%) and smoked within 30 minutes of waking (72.2%). After imputing those lost to follow-up as smokers, no statistically significant difference in long-term smoking abstinence rates at week 26 was observed between bupropion SR and placebo groups (13.3% vs 10.0%, OR = 1.39, 95% CI = 0.82 to 2.35, P = .23). Cotinine-verified smoking abstinence rate at end of medication week 7 was higher in the bupropion SR vs placebo group (23.7% vs 9.6%, OR = 2.92, 95% CI = 1.78 to 4.77, P < .001). CONCLUSIONS Bupropion SR was effective in promoting smoking cessation during the medication phase of treatment but showed no effect on long-term smoking cessation among African American light smokers. More research is needed to identify strategies for sustaining abstinence among African American light smokers.
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Affiliation(s)
- Lisa Sanderson Cox
- Department of Preventive Medicine and Public Health, University of Kansas Medical Center, Kansas City, KS 66160, USA.
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Faseru B, Choi WS, Krebill R, Mayo MS, Nollen NL, Okuyemi KS, Ahluwalia JS, Cox LS. Factors associated with smoking menthol cigarettes among treatment-seeking African American light smokers. Addict Behav 2011; 36:1321-4. [PMID: 21816543 PMCID: PMC3179803 DOI: 10.1016/j.addbeh.2011.07.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Revised: 04/18/2011] [Accepted: 07/14/2011] [Indexed: 11/30/2022]
Abstract
BACKGROUND Smoking menthol cigarettes is more prevalent among African Americans (AA) compared to Whites. Menthol has been found to be inversely related to smoking cessation among AA, yet little is known about the factors associated with menthol smoking among AA light smokers. This study examines baseline demographic, psychological, and smoking factors associated with smoking menthol cigarettes among AA light smokers (≤10 cigarettes per day). METHODS Participants (n=540) were enrolled in a double blind, placebo-controlled randomized trial of bupropion in combination with health education counseling for smoking cessation. Bivariate differences between menthol and non-menthol smokers were explored and baseline factors associated with smoking menthol cigarettes were identified. RESULTS Participants averaged 46.5 years in age, predominantly female (66.1%), and smoked an average of 8.0 cpd (SD=2.5). The majority (83.7%) smoked menthol cigarettes. In bivariate analysis, menthol cigarette smokers were younger (mean age: 45 vs. 52 years p<0.0001), were more likely to be female (68% vs. 52% p=0.003) and had smoked for shorter duration (28 vs. 34 years p<0.0001) compared to non-menthol smokers. While depression and withdrawal scores were slightly higher and exhaled carbon monoxide values were lower among menthol smokers, the differences were not statistically significant. CONCLUSIONS Among AA light smokers, younger individuals and females were more likely to smoke menthol cigarettes and may be more susceptible to the health effects of smoking. Appropriately targeted health education campaigns are needed to prevent smoking uptake in this high-risk population.
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Affiliation(s)
- Babalola Faseru
- Department of Preventive Medicine and Public Health, University of Kansas Medical Center, Kansas City, KS 66160, USA.
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Nollen NL, Kimminau KS, Nazir N. Demographic and financial characteristics of school districts with low and high à la Carte sales in rural Kansas Public Schools. J Am Diet Assoc 2011; 111:879-83. [PMID: 21616201 PMCID: PMC3860170 DOI: 10.1016/j.jada.2011.03.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2010] [Accepted: 11/12/2010] [Indexed: 11/29/2022]
Abstract
Reducing à la carte items in schools-foods and beverages sold outside the reimbursable meals program-can have important implications for childhood obesity. However, schools are reluctant to reduce à la carte offerings because of the impact these changes could have on revenue. Some foodservice programs operate with limited à la carte sales, but little is known about these programs. This secondary data analysis compared rural and urban/suburban school districts with low and high à la carte sales. Foodservice financial records (2007-2008) were obtained from the Kansas State Department of Education for all public K-12 school districts (n=302). χ² and t tests were used to examine the independent association of variables to à la carte sales. A multivariate model was then constructed of the factors most strongly associated with low à la carte sales. In rural districts with low à la carte sales, lunch prices and participation were higher, lunch costs and à la carte quality were lower, and fewer free/reduced price lunches were served compared to rural districts with high à la carte sales. Lunch price (odds ratio=1.2; 95% confidence interval, 1.1 to 1.4) and free/reduced price lunch participation (odds ratio=3.0; 95% confidence interval, 1.0 to 9.8) remained in the multivariate model predicting low à la carte sales. No differences were found between urban/suburban districts with low and high à la carte sales. Findings highlight important factors to maintaining low à la carte sales. Schools should consider raising lunch prices and increasing meal participation rates as two potential strategies for reducing the sale of à la carte items without compromising foodservice revenue.
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Affiliation(s)
- Nicole L Nollen
- Department of Preventive Medicine and Public Health, University of Kansas Medical Center, Kansas City, KS, USA.
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