290 - Marijuana smoke incursions among households with children in the United States

Publication Number: 2280.290

Daniel D. Han, University of Rochester School of Medicine and Dentistry, Rochester, NY, United States; Hongyue Wang, University of Rochester School of Medicine and Dentistry, Rochester, NY, United States; Karen M. Wilson, Golisano Children's Hospital at The University of Rochester Medical Center, Ovid, NY, United States

Background: In the United States (US), marijuana use has been increasing, leading to concern about possible adverse health effects in children. However, there is limited information about prevalence of marijuana smoke incursions (infiltrations of smoke into an area) in households with children. Families living in multiunit housing are more likely to report tobacco smoke incursions.

Objective: Our objective was to describe reported marijuana smoke incursions and exposures among families with children.

Design/Methods: Cross-sectional survey data were used from US respondents in Wave 4 and Wave 5 of the International Cannabis Policy Study (ICPS) in 2021 and 2022. The ICPS is a population-based online survey using the Nielsen Consumer Insights Global Panel. We limited the survey to respondents aged 16-65 who reported having children aged less than 17-years living in the household. Marijuana smoke incursions were assessed with the question "In the past 6 months, have you noticed any marijuana smoke entering your home from a neighboring unit or from outside your building". In-home exposures were assessed with the question "In the past 30 days, how often were you exposed to second-hand marijuana smoke inside your home?" Proportional odds regression analyses (sampling weight adjusted) were done to assess the association with resident types while controlling for age, socioeconomic status (SES), past 30-day marijuana use, state marijuana laws, and wave of data.

Results: A total of 16729 respondents had children under 17 years old; 6391 (38%) had used marijuana in the past 30 days (Table 1). 31.1% reported experiencing marijuana smoke incursions with 5.6% reported incursions every day. Overall, 36.2% reported marijuana smoke exposure inside their home with 13.7% reporting daily exposure. Incursions were more common in shared accommodations (OR 4.60), attached homes (OR 3.34) and multi-unit housing (OR 2.68; all p< 0.0001, Table 2) compared to single-family homes. Marijuana smoke incursions and exposures differed by residence types, age, and SES (Table 2). Decreased odds of marijuana smoke exposure were seen in older respondents, and increased odds were seen with increased SES, especially in more than $70,000 in income. State marijuana laws were not associated with report of incursions.

Conclusion(s): Reported marijuana smoke incursions and exposures were associated with living in multiunit housing. A large portion of the families with children reported active marijuana use. Our findings call for better marijuana education among families with children and policies that limit marijuana smoke in multiunit housing in the US.

Table 1: Baseline characteristics


Table 2. Regression and Interaction analysis of reports of marijuana smoke incursions and exposures based on residence types, age, SES, cannabis Use, and cannabis legality