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Ratnapradipa K, Samson K, Dai HD. Randomised experiment for the effect of 'Tobacco-Free Nicotine' messaging on current e-cigarette users' perceptions, preferences and intentions. Tob Control 2024; 33:441-448. [PMID: 36596708 PMCID: PMC10315418 DOI: 10.1136/tc-2022-057507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 12/16/2022] [Indexed: 01/05/2023]
Abstract
BACKGROUND It is unclear whether emerging synthetic tobacco-free nicotine superiority messages such as 'better flavor and better experience' and 'no residual impurities of tobacco-derived nicotine' may impact consumer perception and product choice between synthetic and tobacco-derived nicotine vaping products. METHODS Through a 2022 online survey of current e-cigarette users, we identified synthetic nicotine never users for randomisation into an embedded between-subjects experiment. The test group (n=186) viewed a tobacco-free nicotine message versus no message control (n=168). Multivariable regressions assessed messaging effects on three comparative measures between tobacco-free and tobacco-derived nicotine: harm perception, purchase intention and willingness to pay. RESULTS Participants (n=354; age, mean (SD)=34.6 (11.1) years old) were recruited from geographically diverse regions with 27.7% rural residents. The overall sample comprised 44.1% females, 73.5% non-Hispanic white and 71.8% daily e-cigarette users. Sociodemographics and tobacco use status were not significantly different between two randomised groups. The test group (vs control) reported a higher intention to use tobacco-free than tobacco-derived nicotine vaping products (adjusted OR (AOR)=2.4, 95% CI 1.3 to 4.4, p=0.006) and willingness to pay more for tobacco-free nicotine vaping products (AOR=2.6, 95% CI 1.2 to 5.8, p=0.02). Urban (vs rural) synthetic-naïve vapers had lower harm perception (AOR=2.0, 95% CI 1.1 to 3.6, p=0.02) and higher intention to use tobacco-free than tobacco-derived nicotine vaping products (AOR=2.2, 95% CI 1.1 to 4.5, p=0.04); infrequent vapers were more willing to pay more for tobacco-free nicotine vaping products (AOR=1.1, 95% CI 1.03 to 1.17, p=0.002). CONCLUSION Tobacco-free nicotine marketing message may prompt the transition to and promote a price premium for such products. With the proliferation of products in the market, comprehensive regulation of emerging synthetic vaping products is needed.
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Affiliation(s)
| | - Kaeli Samson
- University of Nebraska Medical Center, Omaha, Nebraska, USA
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Verma M, Rana K, Bhatt G, Sharma N, Lal P. Trends and determinants of tobacco use initiation in India: analysis of two rounds of the Global Adult Tobacco Survey. BMJ Open 2023; 13:e074389. [PMID: 37739473 PMCID: PMC10533663 DOI: 10.1136/bmjopen-2023-074389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 09/07/2023] [Indexed: 09/24/2023] Open
Abstract
OBJECTIVES Early initiation of tobacco use can lead to lifelong addiction and increases tobacco-attributable morbidity and mortality. This study assesses trends in tobacco use initiation and factors associated with tobacco use initiation using disaggregated data from two rounds of the Global Adult Tobacco Survey India (GATS; 2009-2010 (GATS 1) and 2016-2017 (GATS 2)). DESIGN Secondary analysis of repeated cross-sectional studies. SETTINGS AND PARTICIPANTS The study involved data from 69 296 individuals and 76 069 households in GATS 1 and 74 037 individuals and 77 170 households in GATS 2, two rounds of a nationally representative survey in India. OUTCOME MEASURES Mean age of initiation (as recalled by the participants) of smoked and smokeless tobacco (SLT) use (dependent variable) was compared and analysed across different sociodemographic variables (independent factors). We assessed change in mean age of initiation of tobacco usage on a daily basis between GATS 1 and GATS 2, and investigated the factors associated with early tobacco use initiation in the GATS 2 dataset (reported using adjusted ORs (aORs) with 95% CIs). RESULTS The mean age of initiation of smoked tobacco and SLT in GATS 2 was 20.9±8.5 and 22.3±10.6 years, compared with 18.5±9.7 and 19.7±12.0 years in GATS 1. The mean age of initiation increased with age and among those who were better aware of the adverse effects of tobacco. As per GATS 2, males initiated smoked tobacco and SLT use earlier (20.6±7.4 and 21.7±9.1) than females (23.3±14.2 and 23.2±12.6 years). Younger participants (15-24 years) reported earlier initiation of SLT (15.5±4.2 years) compared with others. Binary logistic regression depicted variables associated with early initiation of tobacco. Awareness about the harms caused by tobacco affected the odds of SLT (aOR 1.4, 95% CI 1.3 to 1.7) and dual usage initiation (1.8, 1.6 to 2.0), but not of initiation of smoked tobacco products (1.1, 0.9 to 1.2). CONCLUSIONS More robust health advocacy campaigns that communicate the harmful effects of tobacco on health could be useful to delay tobacco initiation, along with reducing the ease of access and affordability of tobacco products among vulnerable groups.
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Affiliation(s)
- Madhur Verma
- Department of Community and Family Medicine, All India Institute of Medical Sciences, Bathinda, Punjab, India
| | - Kirtan Rana
- Department of Community Medicine and School of Public Health, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Garima Bhatt
- Department of Community Medicine and School of Public Health, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Nikita Sharma
- Department of Community and Family Medicine, All India Institute of Medical Sciences, Bilaspur, India
| | - Pranay Lal
- Department of Health, Government of National Capital Territory of Delhi, New Delhi, India
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Romm KF, Turiano NA, Milstred AR, Bray BC, Dino G, Doogan N, Blank MD. Socioecological Predictors of Change in Adolescent Tobacco Use Across Waves 1-4 of the Population Assessment of Tobacco and Health Study. J Adolesc Health 2023; 72:375-382. [PMID: 36528513 PMCID: PMC10868139 DOI: 10.1016/j.jadohealth.2022.09.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 08/25/2022] [Accepted: 09/17/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND Despite decreases in adolescents' cigarette use over the past decade, overall rates of adolescent tobacco use have increased. Research examining adolescents' changes across a range of tobacco products reflective of the current market, as well as multilevel predictors of use trajectories is needed. METHODS Data derive from Waves 1-4 (W1-4; 2013-2018) of the Population Assessment of Tobacco and Health (PATH) study. Participants included 975 adolescents who used ≥1 tobacco product (cigarettes, electronic cigarettes [ECIGs], traditional cigars, cigarillos, filtered cigars, snus, smokeless tobacco [SLT], hookah) at any wave (W1 Mage = 13.29 [0.86], 54.2% male; 54.5% White, 25.9% Hispanic). RESULTS Utilizing latent growth curve modeling (separate models per product), adolescents displayed increases in their past 30-day use of all tobacco products from W1-4. Greater W1 use was predicted by identifying as non-Hispanic (cigarettes); lower parent education (SLT); greater externalizing problems (cigarillos); greater motives (all products except cigarillos); greater youth-reported household smoking rules (cigarillos); and greater isolation (ECIGs). More use across time (i.e., higher slope) was predicted by older age (cigarettes); identifying as male (ECIGs, SLT), Black (vs. White; cigarillos), White (vs. Black, Hispanic; ECIGs, SLT); fewer externalizing problems (SLT); fewer motives (ECIGs); fewer youth-reported rules (cigarillos, SLT); and greater geographic isolation (cigarettes, SLT). DISCUSSION Although some individual-level factors (i.e., motives, externalizing problems) predicted greater W1 use (i.e., intercept) only, interpersonal- (parent rules) and community-level (geographic isolation) factors were associated with changes in use over time (i.e., slope). Intervention efforts may address such factors to reduce adolescents' escalations in use.
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Affiliation(s)
- Katelyn F Romm
- TSET Health Promotion Research Center, Stephenson Cancer Center, Univeristy of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; Department of Pediatrics, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.
| | - Nicholas A Turiano
- Department of Psychology, West Virginia University, Morgantown, West Virginia; West Virginia Prevention Research Center, Department of Social and Behavioral Sciences, School of Public Health, West Virginia University, Morgantown, West Virginia
| | - Andrea R Milstred
- Department of Psychology, West Virginia University, Morgantown, West Virginia
| | - Bethany C Bray
- Institute for Health Research and Policy, University of Illinois at Chicago, Chicago, Illinois
| | - Geri Dino
- West Virginia Prevention Research Center, Department of Social and Behavioral Sciences, School of Public Health, West Virginia University, Morgantown, West Virginia
| | - Nathan Doogan
- Ohio State University, Government Resources Center, Columbus, Ohio
| | - Melissa D Blank
- Department of Psychology, West Virginia University, Morgantown, West Virginia; West Virginia Prevention Research Center, Department of Social and Behavioral Sciences, School of Public Health, West Virginia University, Morgantown, West Virginia
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Raskind IG, Vishwakarma M, Schleicher NC, Andersen-Rodgers E, Henriksen L. The changing retail landscape for tobacco: dollar stores and the availability of cheap cigarettes among tobacco-related priority populations. Tob Control 2022; 31:e140-e147. [PMID: 34607887 PMCID: PMC8977398 DOI: 10.1136/tobaccocontrol-2020-056389] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 08/10/2021] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Dollar stores are rapidly altering the retail landscape for tobacco. Two of the three largest chains sell tobacco products in more than 24 000 stores across the USA. We sought to examine whether dollar stores are more likely to be located in disadvantaged neighbourhoods and whether dollar stores charge less for cigarettes than other tobacco retailers. METHODS Data were collected from a statewide random sample of licensed tobacco retailers in California (n=7678) in 2019. Logistic regression modelled odds of a census tract containing at least one dollar store as a function of tract demographics. Linear mixed models compared price of the cheapest cigarette pack by store type, controlling for tract demographics. RESULTS Census tracts with lower median household income, rural status and higher proportions of school-age youth were more likely to contain at least one dollar store. The cheapest cigarette pack cost less in dollar stores compared with all store types examined except tobacco shops. Estimated price differences ranged from $0.32 (95% CI: 0.14 to 0.51) more in liquor stores and $0.39 (95% CI: 0.22 to 0.57) more in convenience stores, to $0.82 (95% CI: 0.64 to 1.01) more in small markets and $1.86 (95% CI: 1.61 to 2.11) more in stores classified as 'other'. CONCLUSIONS Dollar stores may exacerbate smoking-related inequities by contributing to the availability of cheaper cigarettes in neighbourhoods that are lower income, rural and have greater proportions of youth. Pro-equity retail policies, such as minimum price laws and density reduction policies, could mitigate the health consequences of dollar stores' rapid expansion.
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Affiliation(s)
- Ilana G Raskind
- Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, California, USA
| | - Monika Vishwakarma
- Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, California, USA
| | - Nina C Schleicher
- Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, California, USA
| | | | - Lisa Henriksen
- Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, California, USA
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5
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Hendi AS, Ho JY. Smoking and the widening inequality in life expectancy between metropolitan and nonmetropolitan areas of the United States. Front Public Health 2022; 10:942842. [PMID: 36159248 PMCID: PMC9490306 DOI: 10.3389/fpubh.2022.942842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 08/16/2022] [Indexed: 01/21/2023] Open
Abstract
Background Geographic inequality in US mortality has increased rapidly over the last 25 years, particularly between metropolitan and nonmetropolitan areas. These gaps are sizeable and rival life expectancy differences between the US and other high-income countries. This study determines the contribution of smoking, a key contributor to premature mortality in the US, to geographic inequality in mortality over the past quarter century. Methods We used death certificate and census data covering the entire US population aged 50+ between Jan 1, 1990 and Dec 31, 2019. We categorized counties into 40 geographic areas cross-classified by region and metropolitan category. We estimated life expectancy at age 50 and the index of dissimilarity for mortality, a measure of inequality in mortality, with and without smoking for these areas in 1990-1992 and 2017-2019. We estimated the changes in life expectancy levels and percent change in inequality in mortality due to smoking between these periods. Results We find that the gap in life expectany between metros and nonmetros increased by 2.17 years for men and 2.77 years for women. Changes in smoking-related deaths are responsible for 19% and 22% of those increases, respectively. Among the 40 geographic areas, increases in life expectancy driven by changes in smoking ranged from 0.91 to 2.34 years for men while, for women, smoking-related changes ranged from a 0.61-year decline to a 0.45-year improvement. The most favorable trends in years of life lost to smoking tended to be concentrated in large central metros in the South and Midwest, while the least favorable trends occurred in nonmetros in these same regions. Smoking contributed to increases in mortality inequality for men aged 70+, with the contribution ranging from 8 to 24%, and for women aged 50-84, ranging from 14 to 44%. Conclusions Mortality attributable to smoking is declining fastest in large cities and coastal areas and more slowly in nonmetropolitan areas of the US. Increasing geographic inequalities in mortality are partly due to these geographic divergences in smoking patterns over the past several decades. Policies addressing smoking in non-metropolitan areas may reduce geographic inequality in mortality and contribute to future gains in life expectancy.
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Affiliation(s)
- Arun S. Hendi
- Office of Population Research and Department of Sociology, Princeton University, Princeton, NJ, United States,*Correspondence: Arun S. Hendi
| | - Jessica Y. Ho
- Department of Sociology and Criminology and Population Research Institute, The Pennsylvania State University, University Park, PA, United States
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6
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Blank MD, Ozga JE, Romm KF, Douglas A, Alexander L, Doogan NJ, Wilson M, Dino G. Geographic isolation predicts tobacco product use among youth: A latent class analysis. J Rural Health 2022; 38:373-381. [PMID: 33978979 PMCID: PMC8586053 DOI: 10.1111/jrh.12583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
PURPOSE The purpose of the current study was to evaluate associations between geographic rurality and tobacco use patterns among adolescents. METHODS High school students (N = 566) from north-central Appalachia reported on their lifetime and/or current use of cigarettes, electronic cigarettes (ECIGs), cigars, and smokeless tobacco. Geographic rurality was measured via the Isolation scale, whereby residential ZIP Codes determined the degree to which respondents have access to health-related resources. Latent class analysis (LCA) was used to identify discrete classes of adolescent tobacco users based on their use of tobacco products. Then, associations between participants' geographic rurality and class membership were evaluated using a series of multinomial logistic regressions. FINDINGS LCA classified participants as Nonusers, Current ECIG Users, Cigarette/ECIG Experimenters, and Polytobacco Users. Individuals with higher Isolation scores were more likely to be Polytobacco Users and Cigarette/ECIG Experimenters than Nonusers, and were more likely to be Polytobacco Users than Current ECIG Users. CONCLUSIONS The continuous Isolation scale used in the present study predicted polytobacco use patterns among adolescents in a manner that is consistent with, while simultaneously expanding upon, prior work. Tobacco control practices and policies should be viewed through a lens that considers the unique needs of geographically isolated areas.
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Affiliation(s)
- Melissa D. Blank
- Department of Psychology, West Virginia University, Morgantown, West Virginia, USA
- WV Prevention Research Center, West Virginia University, Morgantown, West Virginia, USA
| | - Jenny E. Ozga
- Department of Behavioral Medicine & Psychiatry, West Virginia University, Morgantown, West Virginia, USA
| | - Katelyn F. Romm
- Department of Prevention and Community Health, George Washington University, Milken Institute School of Public Health, Washington, DC, USA
| | - Ashley Douglas
- Department of Psychology, West Virginia University, Morgantown, West Virginia, USA
| | - Linda Alexander
- Department of Social & Behavioral Sciences, West Virginia University, Morgantown, West Virginia, USA
| | - Nathan J. Doogan
- Government Resources Center, Ohio State University, Columbus, Ohio, USA
| | - Michael Wilson
- Department of Psychology, West Virginia University, Morgantown, West Virginia, USA
| | - Geri Dino
- WV Prevention Research Center, West Virginia University, Morgantown, West Virginia, USA
- Department of Social & Behavioral Sciences, West Virginia University, Morgantown, West Virginia, USA
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Holmes LM, McQuoid J, Shah A, Cruz T, Akom A, Ling PM. Piloting a spatial mixed method for understanding neighborhood tobacco use disparities. Soc Sci Med 2021; 291:114460. [PMID: 34655940 PMCID: PMC8671214 DOI: 10.1016/j.socscimed.2021.114460] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 08/21/2021] [Accepted: 10/05/2021] [Indexed: 11/18/2022]
Abstract
The tobacco retail environment is where most advertising dollars are spent. However, most research on the retail environment has not methodologically situated tobacco retailers as part of a larger community, and few studies have incorporated community member perspectives of their own tobacco use in relation to their local environments. The purpose of this study is to describe and evaluate a multilevel, multimodal, mixed methods approach for understanding tobacco use in context. We combine quantitative data collected from tobacco retailer audits and geographically-explicit interviews with neighborhood residents to tell a more complete story of tobacco use behavior among adults in San Francisco's Marina district, and the Oakland Coliseum neighborhood in Alameda County, California. We find that while area-level and retail data provide a broad snapshot of two distinct communities with respect to sociodemographic characteristics and tobacco availability, interviews with community residents who use tobacco add important perspectives regarding how tobacco retailers are viewed and how residents interact with their neighborhood landscapes on a daily basis. The method we describe and critique has the potential to be scaled to incorporate a broader set of geographies, or tailored to address a multitude of health-related questions. Our approach further demonstrates the utility of including geolocated participant narratives as a means of understanding where researcher interpretations of urban environments diverge from those of community residents.
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Affiliation(s)
- Louisa M Holmes
- Departments of Geography and Demography, And the Social Science Research Institute, Pennsylvania State University, 302 Walker Building, University Park, PA, 16802, USA.
| | - Julia McQuoid
- TSET Health Promotion Research Center, University of Oklahoma Health Sciences Center, 655 Research Parkway, OK, 73104, USA
| | - Aekta Shah
- Streetwyze, 1330 Broadway Suite 300, Oakland, CA 94612 & USA and Social Innovation and Urban Opportunity Lab, UCSF & San Francisco State University, 1600 Holloway Ave, San Francisco, CA, 94132, USA
| | - Tessa Cruz
- Streetwyze, 1330 Broadway Suite 300, Oakland, CA 94612 & USA and Social Innovation and Urban Opportunity Lab, UCSF & San Francisco State University, 1600 Holloway Ave, San Francisco, CA, 94132, USA
| | - Antwi Akom
- Streetwyze, 1330 Broadway Suite 300, Oakland, CA 94612 & USA and Social Innovation and Urban Opportunity Lab, UCSF & San Francisco State University, 1600 Holloway Ave, San Francisco, CA, 94132, USA
| | - Pamela M Ling
- Center for Tobacco Control Research and Education, University of California San Francisco, 530 Parnassus Avenue, Suite 366 Library, San Francisco, CA, 94143-1390, USA
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Andersen-Rodgers E, Zhang X, Vuong TD, Hendrix L, Edora C, Williams RJ, Groves L, Roeseler A, Rogers T, Voelker DH, Schleicher NC, Johnson TO, Henriksen L. Are California's Local Flavored Tobacco Sales Restrictions Effective in Reducing the Retail Availability of Flavored Tobacco Products? A Multicomponent Evaluation. EVALUATION REVIEW 2021; 45:134-165. [PMID: 34693773 PMCID: PMC8600589 DOI: 10.1177/0193841x211051873] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
INTRODUCTION Flavored tobacco appeals to new users. This paper describes evaluation results of California's early ordinances restricting flavored tobacco sales. METHODS A multicomponent evaluation of proximal policy outcomes involved the following: (a) tracking the reach of local ordinances; (b) a retail observation survey; and (c) a statewide opinion poll of tobacco retailers. Change in the population covered by local ordinances was computed. Retail observations compared availability of flavored tobacco at retailers in jurisdictions with and without an ordinance. Mixed models compared ordinance and matched no-ordinance jurisdictions and adjusted for store type. An opinion poll assessed retailers' awareness and ease of compliance with local ordinances, comparing respondents in ordinance jurisdictions with the rest of California. RESULTS The proportion of Californians living in a jurisdiction with an ordinance increased from 0.6% in April 2015 to 5.82% by January 1, 2019. Flavored tobacco availability was significantly lower in ordinance jurisdictions than in matched jurisdictions: menthol cigarettes (40.6% vs. 95.0%), cigarillos/cigar wraps with explicit flavor descriptors (56.4% vs. 85.0%), and vaping products with explicit flavor descriptors (6.1% vs. 56.9%). Over half of retailers felt compliance was easy; however, retailers in ordinance jurisdictions expressed lower support for flavor sales restrictions. CONCLUSIONS The proportion of California's population covered by a flavor ordinance increased nine-fold between April 2015 and January 2019. Fewer retailers in ordinance jurisdictions had flavored tobacco products available compared to matched jurisdictions without an ordinance, but many still advertised flavored products they could not sell. Comprehensive ordinances and retailer outreach may facilitate sales-restriction support and compliance.
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Affiliation(s)
- Elizabeth Andersen-Rodgers
- California Tobacco Control Program, California Department of Public
Health, Sacramento, CA, USA
- Elizabeth Andersen-Rodgers, California
Tobacco Control Program, California Department of Public Health, P.O. Box
997377, MS 7206, Sacramento, CA 95899-7377, USA.
| | - Xueying Zhang
- California Tobacco Control Program, California Department of Public
Health, Sacramento, CA, USA
| | - Tam D. Vuong
- California Tobacco Control Program, California Department of Public
Health, Sacramento, CA, USA
- UC Davis Comprehensive Cancer
Center, University of California
Davis, Sacramento, CA, USA
| | - Liz Hendrix
- California Tobacco Control Program, California Department of Public
Health, Sacramento, CA, USA
| | - Cheryl Edora
- California Tobacco Control Program, California Department of Public
Health, Sacramento, CA, USA
| | - Rebecca J. Williams
- California Tobacco Control Program, California Department of Public
Health, Sacramento, CA, USA
| | - Lauren Groves
- California Tobacco Control Program, California Department of Public
Health, Sacramento, CA, USA
| | - April Roeseler
- California Tobacco Control Program, California Department of Public
Health, Sacramento, CA, USA
| | - Todd Rogers
- Center for Health Analytics, Media,
and Policy, RTI International, Research Triangle Park, NC, USA
| | - David H. Voelker
- Stanford Prevention Research
Center, Stanford University School of
Medicine, Palo Alto, CA, USA
| | - Nina C. Schleicher
- Stanford Prevention Research
Center, Stanford University School of
Medicine, Palo Alto, CA, USA
| | - Trent O. Johnson
- Stanford Prevention Research
Center, Stanford University School of
Medicine, Palo Alto, CA, USA
| | - Lisa Henriksen
- Stanford Prevention Research
Center, Stanford University School of
Medicine, Palo Alto, CA, USA
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