BACKGROUND: Restricting youth access to tobacco is a central feature of US tobacco regulatory policy, but impact of local tobacco retail licensing (TRL) regulation on cigarette smoking rates remains uncertain. Effects of TRL on other tobacco product use and use as adolescents reach the age to legally purchase tobacco products has not been investigated. METHODS: Prevalences of ever and past 30-day cigarette, electronic cigarette (e-cigarette), cigar, and hookah use were assessed in a survey of a cohort of 1553 11th-and 12th-grade adolescents (mean age: 17.3 years); rates of initiation were evaluated 1.5 years later. An American Lung Association (2014) youth access grade was assigned to each of 14 political jurisdictions in which participants lived on the basis of the strength of the local TRL ordinance. RESULTS: At baseline, participants living in 4 jurisdictions with "A" grades (ie, with most restrictive ordinances) had lower odds of ever cigarette use (odds ratio [OR] 0.61; 95% confidence interval [CI] 0.41-0.90) and of past 30-day use (OR 0.51; 95% CI 0.29-0.89) than participants in 10 D-to F-grade jurisdictions. At follow-up at legal age of purchase, lower odds of cigarette use initiation (OR 0.67; 95% CI 0.45-0.99) occurred in jurisdictions with stronger TRL policy. Lower odds of e-cigarette initiation at follow-up (OR 0.74; 95% CI 0.55-0.99) and of initiation with past 30-day use (OR 0.45; 95% CI 0.23-0.90) were also associated with better regulation.

Purpose Prior studies reported homeless adolescents engage in more sexual risk than their housed peers. However, these comparisons are typically made post hoc by comparing homeless adolescent community-based samples with high school probability samples. This study utilizes a random sample of high school students to examine homelessness experiences and sexual risk behaviors. Methods A supplemental survey to the Youth Risk Behavior Survey containing questions regarding homelessness and sexual health was administered to Los Angeles high school students (N=1,839). Multivariate logistic regressions assessed the associations between demographics, past year homelessness experiences (i.e., place of nighttime residence), and being sexually active and condom use at last intercourse. Results Homelessness experiences consisted of staying in a shelter (10.4%), a public place (10.1%), and with a stranger (5.6%). Lesbian, gay, bisexual, transgender, questioning (LGBTQ), younger, and male adolescents were more likely to experience homelessness. LGBTQ adolescents were also more likely to report staying with a stranger and less likely to report staying in a shelter. Compared to adolescents who stayed in shelters, adolescents who stayed with strangers and in public places were more likely to engage in unprotected sex at last intercourse. Conclusions Adolescents who report sexual activity and sexual risk taking are more likely to report homelessness experiences. With regard to sexual health, staying with strangers could be a particularly risky form of homelessness; LGBTQ and Black adolescents are more likely to experience this form of homelessness. Efforts to reduce homelessness and sexual risk-taking need to recognize the specific vulnerabilities faced by these populations.