Feasibility and efficacy of an intervention to reduce secondhand smoke exposure among infants discharged from a neonatal intensive care unit

Increased risk for alcohol- and other substance-exposed pregnancies among women who smoke tobacco: A secondary analysis of a primary care-based intervention

INTRODUCTION

Among women at risk for alcohol-exposed pregnancies (AEP), smoking tobacco may be associated with increased severity of alcohol use, and risk for tobacco-exposed and other substance-exposed pregnancies (TEPs/SEPs). Our secondary data analysis of the 'CHOICES Plus' intervention trial explored AEP and SEP risk by smoking status.

METHODS

Eligible women (N=261) were recruited from 12 primary care clinics in a public healthcare system, not pregnant, aged 18-44 years, drinking >3 drinks/day or >7 drinks/week, sexually active, and not using effective contraception. We compared women who did and did not smoke tobacco on alcohol and drug severity, and psychological distress (e.g. anxiety) at baseline.

RESULTS

Participants were primarily Hispanic (47.1%) or non-Hispanic Black (41.8%) and reported incomes <$20000/year (69.3%). Tobacco smoking prevalence was 45.2%. Compared to non-smokers, those who smoked drank more days/week (mean=3.3, SD=2.0 vs mean=2.7, SD=1.8, p<0.01), had higher alcohol use disorders identification test (AUDIT) scores (mean=12.1, SD=7.6 vs mean=9.8, SD=7.1, p<0.05), were more likely to report current drug use (66.1% vs 48.3%, p<0.01), and had a greater number of (lifetime) drugs used (mean=3.0, SD=2.0 vs mean=2.0, SD=1.5 days, p<0.0001). Also, those who smoked reported greater levels of anxiety (mean=5.9, SD=5.6 vs mean=4.5, SD=4.9, p<0.05), lower confidence to not drink (mean=2.8, SD=0.8 vs mean=3.1, SD=1.0, p<0.01), lower confidence to reduce risky drinking (mean=6.3, SD=3.1 vs mean=7.3, SD=2.8, p<0.0001), greater drinking temptations (mean=3.0, SD=0.9 vs mean=2.6, SD=0.9, p<0.01), and, yet greater readiness to reduce alcohol use (mean=6.2, SD=3.0 vs mean=5.2, SD=3.0, p<0.05).

CONCLUSIONS

Women who drink and smoke may have the highest AEP, TEP, and other SEP risk. Primary care providers should screen for alcohol and tobacco co-use and provide brief intervention and/or treatment referral.

CLINICAL TRIAL REGISTRATION

The study was registered on the official website of ClinicalTrials.gov.

IDENTIFIER

ID NCT01032772.

Evaluating the relationship of in utero nicotine exposure with hypoglycemia after delivery: An observational study

BACKGROUND

Hypoglycemia in neonates is common and contributes to 4.0-5.8% of neonatal intensive care unit (NICU) admissions. In utero nicotine exposure is underexplored as a potential contributor to neonatal hypoglycemia. Rat models have shown that in utero nicotine exposure can be associated with a reduction in pancreatic beta cell mass, leading to glucose dysregulation. The primary aim of this work is to study the risk of developing hypoglycemia after birth in a population of in utero nicotine-exposed neonates.

METHODS

We conducted a retrospective matched cohort study that augmented an existing dataset of neonates admitted to a level IV NICU with household-based in utero nicotine exposure (N = 335). Neonates in the control group parents denied household smoking (N = 325), were born within a 6-month timeframe, and were within a birthweight of 50 grams of a nicotine-exposed neonate. Data reviewed included gestational age, growth parameters, maternal history of diabetes, and glucose levels within the first three hours of life per unit protocol.

RESULTS

660 neonates were included in the analysis. In utero nicotine exposure demonstrated a 94.3% posterior probability (PP) for greater hypoglycemia risk (RR = 1.185, 95% CrI = [0.953, 1.445]). A 94.6% PP was demonstrated when neonates who were small for gestational age, intrauterine growth-restricted, and born to diabetic mothers were excluded (n = 482; RR = 1.271, 95% CrI = [0.946, 1.669]).

CONCLUSION

Nicotine exposure in utero was found to be a potential risk factor for developing hypoglycemia after birth. Mechanisms of action should be explored, and additional research on in utero nicotine exposure risks should follow.

Motivational interviewing to promote interconception health: A scoping review of evidence from clinical trials

BACKGROUND

Promoting interconception health can improve birth outcomes and long-term women's health. Motivational Interviewing (MI) is an evidence-based behavior change strategy that can address interconception health behaviors and health care engagement.

OBJECTIVE

This scoping review assessed the evidence for using MI to promote interconception health and assessed features of successful MI interventions.

METHODS

We searched PubMed, CHINAL, and Cochrane databases for clinical trials that involved an MI intervention and at least one comparison group published by 8/31/2021. Interventions occurred during pregnancy or within three months postpartum and outcomes were measured between birth and one year postpartum. We abstracted data on trial characteristics including outcome, population, interventionist training, MI fidelity monitoring, intervention dose, and comparison condition. We examined whether trials that demonstrated statistically significant improvement in outcomes had common features.

RESULTS

There were 37 included studies. Interventions addressed breastfeeding, teen contraception, tobacco, alcohol, or substance use, vaccine acceptance, nutrition, physical activity, and depression. No trials addressed more than one topic. Nineteen studies demonstrated improved outcomes. Interventions during the perinatal or postnatal periods were more likely to demonstrate improved interconception outcomes than interventions in the prenatal period. No other trial characteristics were consistently associated with demonstrating improved outcomes.

DISCUSSION

MI has been applied to a variety of interconception health behaviors, with some promising results, particularly for interventions in the perinatal or postpartum period. Outcomes were not clearly attributable to any other differences in intervention or study design. Further exploring context or implementation may help maximize the potential of MI in interconception health promotion.

PRACTICAL VALUE

MI may be implemented across a range of clinical settings, patient groups, and time points around pregnancy. Interventions on health topics relevant to the interconception period should incorporate perinatal or postpartum components.

Handwashing Results in Incomplete Nicotine Removal from Fingers of Individuals who Smoke: A Randomized Controlled Experiment

OBJECTIVE

Tobacco residue, also known as third-hand smoke (THS), contains toxicants and lingers in dust and on surfaces and clothes. THS also remains on hands of individuals who smoke, with potential transfer to infants during visitation while infants are hospitalized in neonatal intensive care units (NICUs), raising concerns (e.g., hindered respiratory development) for vulnerable infants. Previously unexplored, this study tested handwashing (HW) and sanitization efficacy for finger-nicotine removal in a sample of adults who smoked and were visiting infants in an NICU.

STUDY DESIGN

A cross-sectional sample was recruited to complete an interview, carbon monoxide breath samples, and three nicotine wipes of separate fingers (thumb, index, and middle). Eligible participants (n = 14) reported current smoking (verified with breath samples) and were randomly assigned to 30 seconds of HW (n = 7) or alcohol-based sanitization (n = 7), with the order of finger wipes both counterbalanced and randomly assigned. After randomization, the first finger was wiped for nicotine. Participants then washed or sanitized their hands and finger two was wiped 5 minutes later. An interview assessing tobacco/nicotine use and exposure was then administered, followed by a second breath sample and the final finger wipe (40-60 minutes after washing/sanitizing).

RESULTS

Generalized linear mixed models found that HW was more effective than sanitizer for nicotine removal but failed to completely remove nicotine.

CONCLUSIONS

Without proper protections (e.g., wearing gloves and gowns), NICU visitors who smoke may inadvertently expose infants to THS. Research on cleaning protocols are needed to protect vulnerable medical populations from THS and associated risks.

KEY POINTS

· NICU infants may be exposed to THS via visitors.. · THS is not eliminated by HW or sanitizing.. · THS removal protections for NICU infants are needed..

Perspectives about Environmental Tobacco Smoke Exposure from Mothers of Premature Infants

OBJECTIVE

 The study aimed to better understand the perceptions of mothers of preterm infants regarding smoking behaviors and environmental tobacco smoke (ETS) exposure using qualitative methodology.

STUDY DESIGN

 Using a Grounded Theory approach, we conducted in-depth, semi-structured interviews with mothers of preterm infants, both smokers and nonsmokers. Using the Theory of Planned Behavior (TPB) as a conceptual framework for our questions, we conducted and analyzed interviews until theoretical saturation was reached. Analysis included an iterative coding process resulting in theme development.

RESULTS

 Our key themes aligned with the TPB domains of attitudes, perceived control, and social norms. Regarding attitudes, mothers expressed that smoking was bad for their infants and that preterm infants were more vulnerable than term infants. Regarding perceived control, mothers commented on their perceived ability to avoid ETS exposure with subthemes including strategies utilized to mitigate ETS exposure risk. Some mothers expressed difficulty avoiding ETS exposure, for example, when residing in high-density housing. Regarding perceived social norms, mothers whose family and friends were nonsmokers expressed ease avoiding ETS, while mothers whose family and friends were smokers expressed more difficulty avoiding ETS.

CONCLUSION

 Mothers used a variety of behaviors within the domains of the TPB to reduce ETS exposures in their preterm infants which can inform future neonatal intensive care unit-based interventional strategies.

KEY POINTS

· Mothers felt ETS is harmful for preterm infants.. · Mothers reported strategies for ETS avoidance.. · Mothers reported barriers to ETS avoidance.. · TPB can frame mothers' ETS-related behaviors..

Duration of breastmilk feeding of NICU graduates who live with individuals who smoke

BACKGROUND

Breast milk has many benefits for infants, but initiating breastfeeding/pumping can be difficult for mothers of preterm infants, especially those who smoke (or live with individuals who smoke). The primary aim of this study was to identify risks for breastfeeding/pumping cessation with neonatal intensive care unit (NICU) infants' mothers who smoke or live with individuals who smoke, using a novel survival-analytic approach.

METHODS/DESIGN

Mothers (N = 360) were recruited for a secondhand smoke prevention intervention during infants' NICU hospitalizations and followed for ~6 months after infant discharge. Data were obtained from medical records and participant self-report/interviews.

RESULTS

The sample was predominantly ethnic/racial minorities; mean age was 26.8 (SD = 5.9) years. One-fifth never initiated breastfeeding/pumping (n = 67; 18.9%) and mean time-to-breastfeeding cessation was 48.1 days (SD = 57.2; median = 30.4 [interquartile range: 6.0-60.9]). Education, length of stay, employment, race/ethnicity, number of household members who smoke, and readiness-to-protect infants from tobacco smoke were significantly associated with breastfeeding cessation. Further, infants fed breast milk for ≥4 months had 42.7% more well-child visits (p < 0.001) and 50.0% fewer respiratory-related clinic visits (p < 0.05).

CONCLUSIONS

One-quarter of infants admitted to NICUs will be discharged to households where individuals who smoke live; we demonstrated that smoking-related factors were associated with mothers' breastfeeding practices. Infants who received breast milk longer had fewer respiratory-related visits.

IMPACT

One-quarter of NICU infants will be discharged to households where smokers live. Initiating/sustaining breastfeeding can be difficult for mothers of preterm NICU infants, especially mothers who smoke or live with others who smoke. Education, employment, race/ethnicity, length of stay, household member smoking, and readiness-to-protect infants from tobacco smoke were significantly associated with time-to-breastfeeding cessation. Infants fed breast milk for ≥4 months had 42.7% more well-child visits and 50.0% fewer respiratory-related clinic visits, compared to infants fed breast milk <4 months. Data support intervention refinements for mothers from smoking households and making NICU-based healthcare workers aware of risk factors for early breastfeeding cessation.

Thirdhand Smoke Contamination and Infant Nicotine Exposure in a Neonatal Intensive Care Unit: An Observational Study

INTRODUCTION

Thirdhand smoke (THS) is ultrafine particulate matter and residue resulting from tobacco combustion, with implications for health-related harm (eg, impaired wound healing), particularly among hospitalized infants. Project aims were to characterize nicotine (THS proxy) transported on neonatal intensive care unit (NICU) visitors and deposited on bedside furniture, as well as infant exposure.

METHODS

Cross-sectional data were collected from participants in a metropolitan NICU. Participants completed a survey and carbon monoxide breath sample, and 41.9% (n = 88) of participants (n = 210) were randomly selected for finger-nicotine wipes during a study phase when all bedside visitors were screened for nicotine use and finger-nicotine levels. During an overlapping study phase, 80 mother-infant dyads consented to bedside furniture-nicotine wipes and an infant urine sample (for cotinine analyses).

RESULTS

Most nonstaff visitors' fingers had nicotine above the limit of quantification (>LOQ; 61.9%). Almost all bedside furniture surfaces (93.8%) and infant cotinine measures (93.6%) had values >LOQ, regardless of household nicotine use. Participants who reported using (or lived with others who used) nicotine had greater furniture-nicotine contamination (Mdn = 0.6 [interquartile range, IQR = 0.2-1.6] µg/m2) and higher infant cotinine (Mdn = 0.09 [IQR = 0.04-0.25] ng/mL) compared to participants who reported no household-member nicotine use (Mdn = 0.5 [IQR = 0.2-0.7] µg/m2; Mdn = 0.04 [IQR = 0.03-0.07] ng/mL, respectively). Bayesian univariate regressions supported hypotheses that increased nicotine use/exposure correlated with greater nicotine contamination (on fingers/furniture) and infant THS exposure.

CONCLUSIONS

Potential furniture-contamination pathways and infant-exposure routes (eg, dermal) during NICU hospitalization were identified, despite hospital prohibitions on tobacco/nicotine use. This work highlights the surreptitious spread of nicotine and potential THS-related health risks to vulnerable infants during critical stages of development.

IMPLICATIONS

THS contamination is underexplored in medical settings. Infants who were cared for in the NICU are vulnerable to health risks from THS exposure. This study demonstrated that 62% of nonstaff NICU visitors transport nicotine on their fingers to the NICU. Over 90% of NICU (bedside) furniture was contaminated with nicotine, regardless of visitors' reported household-member nicotine use or nonuse. Over 90% of infants had detectable levels of urinary cotinine during NICU hospitalizations. Results justify further research to better protect infants from unintended THS exposure while hospitalized.

A Mixed-Methods Systematic Review and Synthesis of Secondary Care Interventions to Reduce Secondhand Smoke Exposure Among Children and Young People

INTRODUCTION

Childhood secondhand smoke exposure (SHSe) is linked with increased morbidity and mortality. Hospital or secondary care contact presents a "teachable moment" to support parents to change their home smoking behaviors to reduce children's SHSe.

AIMS AND METHODS

This mixed-methods review explores: (1) if existing interventions in this context are effective, (2) if they are reported in sufficient detail to be replicated, (3) the experiences of health care professionals delivering such interventions, and (4) the experiences of parents receiving such interventions. Five electronic databases and the gray literature were searched for relevant literature published and indexed January 1980 to February 2020. Fourteen papers reporting 12 studies (nine quantitative and five qualitative) were included. Aligned with the Joanna Briggs Institute method, a segregated approach was used involving independent syntheses of the quantitative and qualitative data followed by an overall mixed-methods synthesis.

RESULTS

There was some evidence of effective interventions that resulted in a short-term (<6 months) reduction in children's SHSe when SHSe was subjectively measured. This was not seen in longer-term follow-up (>6 months) or when SHSe was measured objectively. Inconsistencies with reporting make replication challenging. Experiential evidence suggests a mismatch between stakeholder preferences and interventions being offered.

CONCLUSIONS

The pediatric secondary care interventions included in this analysis failed to show statistically significant evidence of longer-term effectiveness to reduce children's SHSe in all but one low-quality study. There was also inadequate reporting of interventions limiting assessment of effectiveness. It offers further insights into areas to target to develop effective interventions.

IMPLICATIONS

This review used rigorous methods to explore the current, global literature on how children's exposure to secondhand smoke is being tackled in secondary care. This review identified only one low-quality intervention study showing a statistically significant reduction in children's SHSe beyond 6 months. Synthesis with qualitative research identifies a mismatch between what parents want in an intervention and what has been delivered to date. Reporting quality needs to be improved to ensure that interventions can be replicated and studies conducted within the National Health Service to ensure suitability to this setting.

Reducing Tobacco Smoke Exposure in High-Risk Infants: A Randomized, Controlled Trial

OBJECTIVE

To evaluate a hospital-initiated intervention to reduce tobacco smoke exposure in infants in the neonatal intensive care unit.

STUDY DESIGN

A randomized, controlled trial compared motivational interviewing plus financial incentives with conventional care on infant urine cotinine at 1 and 4 months' follow-up. Mothers of infants in the neonatal intensive care unit (N = 360) who reported a smoker living in the home were enrolled. Motivational interviewing sessions were delivered in both the hospital and the home. Financial incentives followed session attendance and negative infant cotinine tests postdischarge.

RESULTS

The intervention effect on infant cotinine was not significant, except among mothers who reported high baseline readiness/ability to protect their infant (P ≤ .01) and mothers who completed the study within 6 months postdischarge (per protocol; P ≤ .05). Fewer mothers in the motivational interviewing plus financial incentives condition were smoking postdischarge (P ≤ .01). More mothers in the motivational interviewing plus financial incentives group reported a total home and car smoking ban at follow-up (P ≤ .05).

CONCLUSIONS

Motivational interviewing combined with financial incentives reduced infant tobacco smoke exposure in a subset of women who were ready/able to protect their infant. The intervention also resulted in less maternal smoking postpartum. More robust interventions that include maternal and partner/household smoking cessation are likely needed to reduce the costly effects of tobacco smoke exposure on children and their families.

TRIAL REGISTRATION

ClinicalTrials.gov: NCT01726062.

Proactive delivery of nicotine replacement therapy to families of hospitalized infants in a NICU: A randomized controlled pilot trial

Neonatal ICU (NICU) hospitalizations provide opportunities to engage individuals/families who smoke with evidence-based cessation treatments to protect infants from tobacco smoke exposure. The aim of this pilot study was to establish the feasibility and potential efficacy of providing motivational advice and NRT (MA+NRT) to families of NICU infants. RCT methodology equally allocated participants who reported ≥1 household smoker (N=32) from a large NICU to MA+NRT or referral to a Quitline. The primary outcome was accepting NRT patches (MA+NRT) and use of NRT. Bayesian analyses modeled NRT use as a function of treatment group. Most MA+NRT participants (81.3%; n=13) accepted the patches. No Quitline participants called the Quitline. NRT use differed across groups, indicating a 0.907 posterior probability that a positive effect for MA+NRT exists (RR=2.32, 95% CI=[0.68-11.34]). This study demonstrated feasibility and acceptability for offering NRT and motivational advice to NICU parents and supports further intervention refinement with NICU families.

Medical staff contributions to thirdhand smoke contamination in a neonatal intensive care unit

INTRODUCTION

Non-smoking policies are strictly enforced in neonatal intensive care units (NICUs), which may still become contaminated by thirdhand smoke (THS), posing potential health risks to medically fragile infants. Study aims were to explore contamination routes by characterizing nicotine levels (THS proxy) found on the fingers of NICU medical staff and to assess finger-nicotine correlates.

METHODS

NICU medical staff were surveyed regarding smoking and electronic nicotine devices (ENDS) use/exposure, and household characteristics. Approximately 35% of staff were randomly selected for a finger-nicotine wipe. Three separate quantile regressions modeled percentiles associated with: presence of any finger nicotine, finger-nicotine levels above the median field blank level (i.e. 0.377 ng/wipe), and finger-nicotine levels two times the median blank.

RESULTS

The final sample size was 246 (n=260 approached; n=14 refusals). Over three-quarters (78.5%) reported some exposure to tobacco smoke or ENDS vapor/aerosols. After field-blank adjustments, the median nicotine level (ng/finger wipe) was 0.232 (IQR: 0.021–0.681) and 78.3% of medical staff had measurable finger-nicotine levels. Both being near smoking in friends’/family members’ homes and finger-surface area were related to elevated finger-nicotine levels (p<0.05) in the median blank model.

CONCLUSIONS

Almost four in five NICU staff had measurable finger nicotine, with finger surface area and frequency of reported exposure to tobacco smoke in friends’/family members’ homes emerging as important correlates. Future research will determine the impact of THS on NICU infants. Medical personnel working in a NICU should be cognizant of secondhand smoke and THS, particularly inside friends’/family members’ homes, to reduce potential NICU contamination and infant exposures.

Family and carer smoking control programmes for reducing children's exposure to environmental tobacco smoke

BACKGROUND

Children's exposure to other people's tobacco smoke (environmental tobacco smoke, or ETS) is associated with a range of adverse health outcomes for children. Parental smoking is a common source of children's exposure to ETS. Older children in child care or educational settings are also at risk of exposure to ETS. Preventing exposure to ETS during infancy and childhood has significant potential to improve children's health worldwide.

OBJECTIVES

To determine the effectiveness of interventions designed to reduce exposure of children to environmental tobacco smoke, or ETS.

SEARCH METHODS

We searched the Cochrane Tobacco Addiction Group Specialised Register and conducted additional searches of the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, PsycINFO, Embase, the Cumulative Index to Nursing and Allied Health Literature (CINAHL), the Education Resource Information Center (ERIC), and the Social Science Citation Index & Science Citation Index (Web of Knowledge). We conducted the most recent search in February 2017.

SELECTION CRITERIA

We included controlled trials, with or without random allocation, that enrolled participants (parents and other family members, child care workers, and teachers) involved in the care and education of infants and young children (from birth to 12 years of age). All mechanisms for reducing children's ETS exposure were eligible, including smoking prevention, cessation, and control programmes. These include health promotion, social-behavioural therapies, technology, education, and clinical interventions.

DATA COLLECTION AND ANALYSIS

Two review authors independently assessed studies and extracted data. Due to heterogeneity of methods and outcome measures, we did not pool results but instead synthesised study findings narratively.

MAIN RESULTS

Seventy-eight studies met the inclusion criteria, and we assessed all evidence to be of low or very low quality based on GRADE assessment. We judged nine studies to be at low risk of bias, 35 to have unclear overall risk of bias, and 34 to have high risk of bias. Twenty-one interventions targeted populations or community settings, 27 studies were conducted in the well-child healthcare setting and 26 in the ill-child healthcare setting. Two further studies conducted in paediatric clinics did not make clear whether visits were made to well- or ill-children, and another included visits to both well- and ill-children. Forty-five studies were reported from North America, 22 from other high-income countries, and 11 from low- or middle-income countries. Only 26 of the 78 studies reported a beneficial intervention effect for reduction of child ETS exposure, 24 of which were statistically significant. Of these 24 studies, 13 used objective measures of children's ETS exposure. We were unable to pinpoint what made these programmes effective. Studies showing a significant effect used a range of interventions: nine used in-person counselling or motivational interviewing; another study used telephone counselling, and one used a combination of in-person and telephone counselling; three used multi-component counselling-based interventions; two used multi-component education-based interventions; one used a school-based strategy; four used educational interventions, including one that used picture books; one used a smoking cessation intervention; one used a brief intervention; and another did not describe the intervention. Of the 52 studies that did not show a significant reduction in child ETS exposure, 19 used more intensive counselling approaches, including motivational interviewing, education, coaching, and smoking cessation brief advice. Other interventions consisted of brief advice or counselling (10 studies), feedback of a biological measure of children's ETS exposure (six studies), nicotine replacement therapy (two studies), feedback of maternal cotinine (one study), computerised risk assessment (one study), telephone smoking cessation support (two studies), educational home visits (eight studies), group sessions (one study), educational materials (three studies), and school-based policy and health promotion (one study). Some studies employed more than one intervention. 35 of the 78 studies reported a reduction in ETS exposure for children, irrespective of assignment to intervention and comparison groups. One study did not aim to reduce children's tobacco smoke exposure but rather sought to reduce symptoms of asthma, and found a significant reduction in symptoms among the group exposed to motivational interviewing. We found little evidence of difference in effectiveness of interventions between the well infant, child respiratory illness, and other child illness settings as contexts for parental smoking cessation interventions.

AUTHORS' CONCLUSIONS

A minority of interventions have been shown to reduce children's exposure to environmental tobacco smoke and improve children's health, but the features that differentiate the effective interventions from those without clear evidence of effectiveness remain unclear. The evidence was judged to be of low or very low quality, as many of the trials are at a high risk of bias, are small and inadequately powered, with heterogeneous interventions and populations.

Minimal intervention delivered by 2-1-1 information and referral specialists promotes smoke-free homes among 2-1-1 callers: a Texas generalisation trial

Background

Replication of intervention research is reported infrequently, limiting what we know about external validity and generalisability. The Smoke Free Homes Program, a minimal intervention, increased home smoking bans by United Way 2-1-1 callers in randomised controlled trials in Atlanta, Georgia and North Carolina.

Objective

Test the programme's generalisability-external validity in a different context.

Methods

A randomised controlled trial (n=508) of English-speaking callers from smoking-discordant households (≥1 smoker and ≥1 non-smoker). 2-1-1 Texas/United Way HELPLINE call specialists serving the Texas Gulf Coast recruited callers and delivered three mailings and one coaching call, supported by an online tracking system. Data collectors, blind to study assignment, conducted telephone interviews 3 and 6 months postbaseline.

Results

At 3 months, more intervention households reported a smoke-free home (46.6% vs 25.4%, p<0.0001; growth model intent-to-treat OR=1.48, 95% CI 1.241 to 1.772, p<0.0001). At 6 months, self-reported full bans were 62.9% for intervention participants and 38.4% for controls (OR=2.19). Texas trial participants were predominantly women (83%), single-smoker households (76%) and African-American (65%); half had incomes ≤US$10 000/year (50%). Texas recruitment was <50% of the other sites. Fewer callers reported having a smoker in the household. Almost twice the callers with a household smoker declined interest in the programme/study.

Conclusions

Our findings in a region with lower smoking rates and more diverse callers, including English-speaking Latinos, support programme generalisability and convey evidence of external validity. Our recruitment experience indicates that site-specific adjustments might improve recruitment efficiency and reach.

Trial registration number

NCT02097914, Results.

Coaching to create a smoke-free home in a brief secondhand smoke intervention

Few community interventions exist to reduce secondhand exposure to tobacco smoke in the home. This study presents the coaching process of a larger intervention to promote smoke-free homes across an efficacy and 2 effectiveness trials. It furthers assesses the coaching call's reach and participants' satisfaction with the call across three intervention sites. The sources of the data were from baseline and 3-month follow-up surveys, coaching forms or online tracking system and interviews with coaches. Reach for the coaching call across trials was fairly high from 72% to 92%. Overall, the majority of participants were highly satisfied with the intervention (M = 3.76) and found it useful in creating a smoke-free home (M = 3.63). Common goals set were changing the environment to support a home smoking ban (e.g. putting up signs, removing ashtrays) (82%) or picking a date (60%). Challenges to a smoke-free home were consistent with other literature on barriers related to household smoking restrictions, including need for assistance in quitting, outside weather and smokers who do not want to quit. Additional research is needed to explore differential reach and reactions to the coaching call as it is disseminated and the impact of coaching call on the outcome of a smoke-free home.

Tailoring a NICU-Based Tobacco Treatment Program for Mothers Who Are Dependent on Opioids

OBJECTIVE

To collect formative information to design a tailored tobacco treatment intervention for women with newborns treated or evaluated for neonatal abstinence syndrome and to explore current tobacco use behaviors and facilitators and barriers to smoking cessation.

DESIGN

Qualitative descriptive study.

SETTING

An academic medical center in the southern United States.

PARTICIPANTS

Mothers (N = 11) of newborns who were treated or evaluated for neonatal abstinence syndrome at birth within the preceding 3 months. Women recruited were older than 18 years and reported opioid dependence and smoking during pregnancy.

METHODS

Participants took part in semistructured individual interviews that lasted approximately 1 hour. Interviews were professionally transcribed and analyzed in MAXQDA using content analysis.

RESULTS

Five themes emerged from the data: Strategizing to Reduce Risk, Desire to Quit Smoking in the Future, Holding on to Smoking While Working Through Recovery, Feeling Judged by Nurses, and Feeling Supported and Empowered by Nurses. Participants reported that they to reduce risk to their newborns by avoiding second- and thirdhand smoke exposure. Participants wanted to stop smoking but reported many barriers, including multiple life stressors compounded by their newborns' extended stays in the hospital. However, most participants described overall positive experiences and the support of health care providers.

CONCLUSION

Holistic tobacco treatment programs that incorporate stress relief and social support and are led by trusted health care providers have the potential to be effective to reduce smoking in new mothers with histories of opioid dependence disorders and smoking and whose newborns are in the NICU.

Preventing Alcohol and Tobacco Exposed Pregnancies: CHOICES Plus in Primary Care

INTRODUCTION

Alcohol and tobacco use are common among U.S. women, yet if used during pregnancy these substances present significant preventable risks to prenatal and perinatal health. Because use of alcohol and tobacco often continue into the first trimester and beyond, especially among women with unintended pregnancies, effective evidence-based approaches are needed to decrease these risk behaviors. This study was designed to test the efficacy of CHOICES Plus, a preconception intervention for reducing the risk of alcohol- and tobacco-exposed pregnancies (AEPs and TEPs).

STUDY DESIGN

RCT with two intervention groups: CHOICES Plus (n=131) versus Brief Advice (n=130). Data collected April 2011 to October 2013. Data analysis finalized February 2016.

SETTING/PARTICIPANTS

Settings were 12 primary care clinics in a large Texas public healthcare system. Participants were women who were non-sterile, non-pregnant, aged 18-44 years, drinking more than three drinks per day or more than seven drinks per week, sexually active, and not using effective contraception (N=261). Forty-five percent were smokers.

INTERVENTION

Interventions were two CHOICES Plus sessions and a contraceptive visit or Brief Advice and referral to community resources.

MAIN OUTCOME MEASURES

Primary outcomes were reduced risk of AEP and TEP through 9-month follow-up.

RESULTS

In intention-to-treat analyses across 9 months, the CHOICES Plus group was more likely than the Brief Advice group to reduce risk of AEP with an incidence rate ratio of 0.620 (95% CI=0.511, 0.757) and absolute risk reduction of -0.233 (95% CI=-0.239, -0.226). CHOICES Plus group members at risk for both exposures were more likely to reduce TEP risk (incidence rate ratio, 0.597; 95% CI=0.424, 0.840 and absolute risk reduction, -0.233; 95% CI=-0.019, -0.521).

CONCLUSIONS

CHOICES Plus significantly reduced AEP and TEP risk. Addressing these commonly co-occurring risk factors in a single preconception program proved both feasible and efficacious in a low-income primary care population. Intervening with women before they become pregnant could shift the focus in clinical practice from treatment of substance-exposed pregnancies to prevention of a costly public health concern.

TRIAL REGISTRATION

This study is registered at clinicaltrials.gov NCT01032772.

A Minimal Intervention to Promote Smoke-Free Homes among 2-1-1 Callers: North Carolina Randomized Effectiveness Trial

This study examined the extent to which delivery of the minimal Smoke-Free Homes intervention by trained 2-1-1 information and referral specialists had an effect on the adoption of home smoking bans in low-income households. A randomized controlled trial was conducted among 2-1-1 callers (n = 500) assigned to control or intervention conditions. 2-1-1 information and referral specialists collected baseline data and delivered the intervention consisting of 3 mailings and 1 coaching call; university-based data collectors conducted follow-up interviews at 3 and 6 months post-baseline. Data were collected from June 2013 through July 2014. Participants were mostly female (87.2%), African American (61.4%), and smokers (76.6%). Participants assigned to the intervention condition were more likely than controls to report a full ban on smoking in the home at both 3- (38.1% vs 19.3%, p = < .001) and 6-month follow-up (43.2% vs 33.2%, p = .02). The longitudinal intent-to-treat analysis showed a significant intervention effect over time (OR = 1.31, p = .001), i.e. OR = 1.72 at 6 months. This study replicates prior findings showing the effectiveness of the minimal intervention to promote smoke-free homes in low-income households, and extends those findings by demonstrating they can be achieved when 2-1-1 information and referral specialists deliver the intervention. Findings offer support for this intervention as a generalizable and scalable model for reducing secondhand smoke exposure in homes.

Understanding motivation to implement smoking bans among mothers with a hospitalized infant

OBJECTIVE

Secondhand smoke exposure (SHSe) poses risks to hospitalized children upon discharge and no uniformly effective interventions have been identified. Understanding change-related processes and social-contextual factors related to motivation for implementing home and car smoking bans may inform interventions to reduce infant SHSe among mothers with a hospitalized infant.

METHODS

In this cross-sectional, secondary analysis, mothers of neonatal ICU infants who reported smoking or living with a smoker (N=205) were assigned to stages of change (pre-contemplation, contemplation, preparation, or action) based on behaviors and intentions for establishing smoking bans in their homes and cars. Processes of change (POC) for SHSe reduction practices, self-efficacy, depressive symptoms, generalized anxiety, and social support for not smoking in the home were examined across all four stages.

RESULTS

The majority of mothers were in the action stage for having a home smoking ban in place (55%); only 35% of participants were in action for a car smoking ban. POC use differed across the stages of change for having a home ban (p=0.004) and car ban (p=0.02), with earlier stages using fewer overall and relatively fewer cognitive/affective processes. Earlier stage women also reported lower self-efficacy to change, less familial and partner support for in-home smoking bans, and more depressive symptoms.

CONCLUSIONS

Novel intervention targets were identified, including cognitive/affective change processes, mental health, and familial/social contingencies for implementing SHSe protective practices. Creative ways in which to affect change at the individual and household level are needed in order to fully address the complexity of child SHSe.

The art and science of study identification: a comparative analysis of two systematic reviews

BACKGROUND

Systematic reviews (SRs) form the foundation for guidelines and evidence-based policy in medicine and public health. Although similar systematic reviews may include non-identical sets of studies, and it is recognized that different sets of studies may lead to different conclusions, little work has been published on why SR study cohorts differ.

METHODS

We took advantage of concurrent publication of two SRs on the same topic - prevention of child exposure to tobacco smoke - to understand why study cohorts differed in the two reviews. We identified all studies included in just one review, investigated validity of specified reasons for exclusions, and, using database records, explored reasons for study non-identification. We assessed review methods and discordancy, and attempted to assess whether changes in study cohorts would have changed conclusions.

RESULTS

Sixty-one studies were included in the two reviews. Thirty-five studies were present in just one review; of these, twenty were identified and excluded by the parallel review. Omissions were due to: review scope (9 studies, 26%), outcomes of interest not measured (8 studies, 23%), exclusion of reports with inadequate reporting (6 studies, 17%), mixed or unclear reasons (3 studies, 8%), search strategies concerning filters, tagging, and keywords (3 studies, 8%), search strategies regarding sources (PUBMED not searched) (2 studies, 6%); discordant interpretation of same eligibility criteria (2 studies, 6%), and non-identification due to non-specific study topic (2 studies, 6%). Review conclusions differed, but were likely due to differences in synthesis methods, not differences in study cohorts.

CONCLUSIONS

The process of study identification for SRs is part art and part science. While some differences are due to differences in review scope, outcomes measured, or reporting practices, others are caused by search methods or discrepancies in reviewer interpretations. Different study cohorts may or may not be a cause of differing SR results. Completeness of SR study cohorts could be enhanced by 1 - independent identification of studies by at least two reviewers, as recommended by recent guidelines, 2 - searching PUBMED with free-text keywords in addition to MEDLINE to identify recent studies, and 3 - Using validated search filters.

Effectiveness of Interventions to Reduce Tobacco Smoke Pollution in Homes: A Systematic Review and Meta-Analysis

INTRODUCTION

Smoke-free homes can help protect children from tobacco smoke exposure (TSE). The objective of this study was to conduct a meta-analysis to quantify effects of interventions on changes in tobacco smoke pollution in the home, as measured by air nicotine and particulate matter (PM).

METHODS

We searched MEDLINE, PubMed, Web of Science, PsycINFO, and Embase. We included controlled trials of interventions which aimed to help parents protect children from tobacco smoke exposure. Two reviewers identified relevant studies, and three reviewers extracted data.

RESULTS

Seven studies were identified. Interventions improved tobacco smoke air pollution in homes as assessed by nicotine or PM. (6 studies, N = 681, p = 0.02). Analyses of air nicotine and PM separately also showed some benefit (Air nicotine: 4 studies, N = 421, p = 0.08; PM: 3 studies, N = 340, p = 0.02). Despite improvements, tobacco smoke pollution was present in homes in all studies at follow-up.

CONCLUSIONS

Interventions designed to protect children from tobacco smoke are effective in reducing tobacco smoke pollution (as assessed by air nicotine or PM) in homes, but contamination remains. The persistence of significant pollution levels in homes after individual level intervention may signal the need for other population and regulatory measures to help reduce and eliminate childhood tobacco smoke exposure.

Thirdhand smoke contamination in hospital settings: assessing exposure risk for vulnerable paediatric patients

BACKGROUND

Tobacco has regained the status of the world's number two killer behind heart/vascular disease. Thirdhand smoke (THS) residue and particles from secondhand smoke (SHS) are suspected health hazards (eg, DNA damage) that are likely to contribute to morbidity and mortality, especially in vulnerable children. THS is easily transported and deposited indoors, where it persists and exposes individuals for months, creating potential health consequences in seemingly nicotine-free environments, particularly for vulnerable patients. We collected THS data to estimate infant exposure in the neonatal ICU (NICU) after visits from household smokers. Infant exposure to nicotine, potentially from THS, was assessed via assays of infant urine.

METHODS

Participants were mothers who smoked and had an infant in the NICU (N=5). Participants provided surface nicotine samples from their fingers, infants' crib/incubator and hospital-provided furniture. Infant urine was analysed for cotinine, cotinine's major metabolite: trans-3'-hydroxycotinine (3HC) and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL), a metabolite of the nicotine-derived and tobacco-specific carcinogen 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK).

RESULTS

Incubators/cribs and other furniture had detectable surface nicotine. Detectable levels of cotinine, 3HC and NNAL were found in the infants' urine.

DISCUSSION

THS appears to be ubiquitous, even in closely guarded healthcare settings. Future research will address potential health consequences and THS-reduction policies. Ultimately, hospital policies and interventions to reduce THS transport and exposure may prove necessary, especially for immunocompromised children.

Feasibility of Measuring Tobacco Smoke Air Pollution in Homes: Report from a Pilot Study

Tobacco smoke air pollution (TSAP) measurement may persuade parents to adopt smoke-free homes and thereby reduce harm to children from tobacco smoke in the home. In a pilot study involving 29 smoking families, a Sidepak was used to continuously monitor home PM(2.5) during an 8-h period, Sidepak and/or Dylos monitors provided real-time feedback, and passive nicotine monitors were used to measure home air nicotine for one week. Feedback was provided to participants in the context of motivational interviews. Home PM(2.5) levels recorded by continuous monitoring were not well-accepted by participants because of the noise level. Also, graphs from continuous monitoring showed unexplained peaks, often associated with sources unrelated to indoor smoking, such as cooking, construction, or outdoor sources. This hampered delivery of a persuasive message about the relationship between home smoking and TSAP. By contrast, immediate real-time PM(2.5) feedback (with Sidepak or Dylos monitor) was feasible and provided unambiguous information; the Dylos had the additional advantages of being more economical and quieter. Air nicotine sampling was complicated by the time-lag for feedback and questions regarding shelf-life. Improvement in the science of TSAP measurement in the home environment is needed to encourage and help maintain smoke-free homes and protect vulnerable children. Recent advances in the use of mobile devices for real-time feedback are promising and warrant further development, as do accurate methods for real-time air nicotine air monitoring.

Thirdhand Smoke in the Homes of Medically Fragile Children: Assessing the Impact of Indoor Smoking Levels and Smoking Bans

INTRODUCTION

Thirdhand smoke (THS) residue results from secondhand smoke, and is emerging as a distinct public health hazard, particularly for medically fragile pediatric patients living with smokers. THS is difficult to remove and readily reacts with other pollutants to form carcinogens and ultrafine particles. This study investigated THS found in homes of high-risk infants admitted to a neonatal intensive care unit and their association with characteristics (eg, number of household smokers) hypothesized to influence THS.

METHODS

Baseline data from 141 hospitalized infants' homes were analyzed, along with follow-up data (n = 22) to explore household smoking characteristics and THS changes in response to indoor smoking ban policies.

RESULTS

Households with an indoor ban, in which not more than 10 cigarettes/d were smoked, had the lowest levels of THS contamination compared to homes with no ban (P < .001) and compared to homes with an indoor ban in which greater numbers of cigarettes were smoked (P < .001). Importantly, homes with an indoor ban in which at least 11 cigarettes/d were smoked were not different from homes without a ban. The follow-up sample of 22 homes provided initial evidence indicating that, unless a ban was implemented, THS levels in homes continued to increase over time.

CONCLUSIONS

Preliminary longitudinal data suggest that THS may continue to accumulate in homes over time and household smoking bans may be protective. However, for homes with high occupant smoking levels, banning indoor smoking may not be fully adequate to protect children from THS. Unless smoking is reduced and bans are implemented, medically fragile children will be exposed to the dangers of THS.

A minimal intervention to promote smoke-free homes among 2-1-1 callers: a randomized controlled trial

OBJECTIVES

We tested the efficacy of a minimal intervention to create smoke-free homes in low-income households recruited through the United Way of Greater Atlanta 2-1-1, an information and referral system that connects callers to local social services.

METHODS

We conducted a randomized controlled trial (n=498) from June 2012 through June 2013, with follow-up at 3 and 6 months. The intervention consisted of 3 mailings and 1 coaching call.

RESULTS

Participants were mostly smokers (79.7%), women (82.7%), African American (83.3%), and not employed (76.5%), with an annual household income of $10,000 or less (55.6%). At 6-months postbaseline, significantly more intervention participants reported a full ban on smoking in the home than did control participants (40.0% vs 25.4%; P=.002). The intervention worked for smokers and nonsmokers, as well as those with or without children.

CONCLUSIONS

Minimal intervention was effective in promoting smoke-free homes in low income households and offers a potentially scalable model for protecting children and adult nonsmokers from secondhand smoke exposure in their homes.

Characteristics associated with intervention and follow-up attendance in a secondhand smoke exposure study for families of NICU infants

OBJECTIVE

The neonatal intensive care unit (NICU) is an ideal setting to intervene with an under served population on secondhand smoke exposure (SHSe). Unfortunately, attrition may compromise outcomes. Baseline characteristics associated with intervention and follow-up attendance were investigated in mothers who participated in a novel SHSe prevention study designed for households with a smoker and a NICU-admitted infant.

METHODS

Intervention participants received two motivational, NICU-based counseling sessions; usual care participants received pamphlets. Home-based follow-up assessments occurred at 1, 3 and 6 months. Sociodemographic, smoking history, and psychosocial factors were analyzed.

RESULTS

Mothers from households with greater numbers of cigarettes smoked and fewer children had higher odds of both intervention and follow-up attendance. Maternal smoking abstinence (lifetime), more adults in the home and higher perceived interpersonal support were also associated with higher odds of follow-up visit completion.

CONCLUSIONS

Innovative strategies are needed to engage mothers in secondhand smoke interventions, especially mothers who smoke, have lower levels of social support and have greater childcare responsibilities.

Effectiveness of motivational interviewing to reduce head start children's secondhand smoke exposure. a randomized clinical trial

RATIONALE

Secondhand smoke exposure (SHSe) is a significant modifiable risk for respiratory health in children. Although SHSe is declining overall, it has increased for low-income and minority populations. Implementation of effective SHSe interventions within community organizations has the potential for significant public health impact.

OBJECTIVES

To evaluate the effectiveness of motivational interviewing (MI) delivered in the context of a SHS education reduction initiative within Head Start to reduce preschool children's SHSe.

METHODS

A total of 350 children enrolled in Baltimore City Head Start whose caregivers reported a smoker living in the home were recruited. Caregivers were randomized to MI + education or education alone. Assessments were conducted at baseline, 3, 6, and 12 months.

MEASUREMENTS AND MAIN RESULTS

The primary outcome measure was household air nicotine levels measured by passive dosimeters. Secondary outcomes included child salivary cotinine, self-report of home smoking ban (HSB), and smoking status. Participants in the MI + education group had significantly lower air nicotine levels (0.29 vs. 0.40 mg), 17% increase in prevalence of caregiver-reported HSBs, and a 13% decrease in caregiver smokers compared with education-alone group (all P values < 0.05). Although group differences in salivary cotinine were not significant, among all families who reported having an HSB, salivary cotinine and air nicotine levels declined in both groups (P < 0.05).

CONCLUSIONS

MI may be effective in community settings to reduce child SHSe. More research is needed to identify ways to tailor interventions to directly impact child SHSe and to engage more families to make behavioral change. Clinical trial registered with www.clinicaltrials.gov (NCT 00927264).

Children's exposure to secondhand and thirdhand smoke carcinogens and toxicants in homes of hookah smokers

INTRODUCTION

We examined homes of hookah-only smokers and nonsmokers for levels of indoor air nicotine (a marker of secondhand smoke) and indoor surface nicotine (a marker of thirdhand smoke), child uptake of nicotine, the carcinogen 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK), and the toxicant acrolein by analyzing their corresponding metabolites cotinine, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL) and NNAL-glucuronides (total NNAL) and 3-hydroxypropylmercapturic acid.

METHODS

Data were collected at 3 home visits during a 7-day study period from a convenience sample of 24 households with a child 5 years or younger. Three child urine samples and 2 air and surface samples from the living room and the child bedroom were taken in homes of nonsmokers (n = 5) and hookah-only smokers (n = 19) comprised of daily hookah smokers (n = 8) and weekly/monthly hookah smokers (n = 11).

RESULTS

Nicotine levels in indoor air and on surfaces in the child bedrooms in homes of daily hookah smokers were significantly higher than in homes of nonsmokers. Uptake of nicotine, NNK, and acrolein in children living in daily hookah smoker homes was significantly higher than in children living in nonsmoker homes. Uptake of nicotine and NNK in children living in weekly/monthly hookah smoker homes was significantly higher than in children living in nonsmoker homes.

CONCLUSIONS

Our data provide the first evidence for uptake of nicotine, the tobacco-specific lung carcinogen NNK, and the ciliatoxic and cardiotoxic agent acrolein in children living in homes of hookah smokers. Our findings suggest that daily and occasional hookah use in homes present a serious, emerging threat to children's long-term health.

Baby's Breath II protocol development and design: a secondhand smoke exposure prevention program targeting infants discharged from a neonatal intensive care unit

BACKGROUND

Over one-third of all children live with at least one parent who smokes cigarettes, which is associated with compromised child health. The impact of secondhand smoke exposure (SHSe) in medically fragile infants born prematurely is likely to be much higher. The Baby's Breath II study tests whether a hospital-initiated, motivational-enhancement program will result in less SHSe relative to conventional care in high-risk, low birthweight (LBW) infants discharged from a neonatal intensive care unit (NICU). The design and protocol for the ongoing BBII trial is described.

METHODS/DESIGN

Eligible participants are: (1) primary caregivers (typically mothers) of NICU infants who were born at LBW (<2500g) or ventilated for more than 12h; and (2) who smoke or live with at least one smoker. This randomized controlled trial has two conditions: Motivational interviewing plus incentives (MI+) and conventional care (CC). MI+ participants receive two hospital-based and two home-based counseling sessions, as well as incentives (i.e., prize-based draws) for (a) intervention attendance and (b) biochemical validation (i.e., urine cotinine dipstick) indicative of low or no infant SHSe. Participants in the control group receive conventional education-based care. Assessments are completed at baseline, mid-point, and 1- and 4-months post-intervention.

DISCUSSION

This study is the first to determine the efficacy of a brief intervention for reducing SHSe among high-risk, LBW infants discharged from a NICU, with the potential for saving lives and healthcare costs. Strengths, limitations and challenges to the conduct of this trial are discussed.