Given the difficulties recruiting probability samples of SMW, researchers will continue to use non-probability samples in the foreseeable future. Thus, understanding how findings may differ between probability and non-probability samples is critically important in advancing research on sexual-orientation-related health disparities.

Objective Despite research documenting disparities in risk for alcohol-related problems among sexual minority women, few studies explore potential protective factors within this population. This study examines how religiosity may function as a protective or risk factor for alcohol-problems or other substance use among sexual minorities compared to heterosexuals. Method Data from 11,169 women who responded to sexual identity and sexual behavior questions from three population-based National Alcohol Survey waves (2000, 2005, 2010) were utilized for analyses of religiosity in relation to lifetime drinking, past year hazardous drinking, and past year drug use. Results Religiosity was significantly greater among exclusively heterosexual women compared to all sexual minority groups (lesbian, bisexual and heterosexual women who report same sex partners). Lesbians reported the lowest rates of affiliation with religions/denominations discouraging alcohol use. Past year hazardous drinking and use of any illicit drugs were significantly lower among exclusively heterosexual women compared to all sexual minority groups. High religiosity was associated with lifetime alcohol abstention and was found to be protective against hazardous drinking and drug use among both sexual minority and heterosexual women. Reporting religious norms unfavorable to drinking was protective against hazardous drinking among exclusively heterosexual women but not sexual minority women Conclusions Findings reveal the importance of considering sexual minority status in evaluation of religion or spirituality as protective among women. Future studies should explore religiosity in the context of other individual and environmental factors, such as positive identity development and community-level acceptance, which may be salient to resiliency among sexual minorities.

Introduction: This study explored whether structural stigma, defined by U.S. state policies related to sexual minority rights, moderated the relationship between sexual identity identity and heavy drinking, alcohol problems, and marijuana use among men and women. Methods: Using combined data from the National Alcohol Survey (NAS) series (2000, 2005, 2010, and 2015), the sample included 11,115 men (421 sexual minority and 10,694 heterosexual) and 14,395 women (413 sexual minority and 13,982 heterosexual). State policy environment was assessed using a time-varying dichotomous indicator of comprehensive protections for sexual minorities (4–6 protections vs. limited or no protections). Gender-stratified logistic regression analyses examined the differential effect of the policy environment by sexual identity on three past-year substance use outcomes: high-intensity drinking (8+ drinks/day), any DSM-5 alcohol use disorder, and marijuana use. Results: Among women, sexual minority status was associated with increased odds of all alcohol and marijuana use outcomes. Among men, sexual minority status was associated with decreased odds of high-intensity drinking but increased use of marijuana. Comprehensive policy protections were associated significantly decreased odds of high-intensity drinking among sexual minority men and marginally significant decreases among women. Conclusions: Comprehensive policy protections appear to be protective for high-intensity drinking among sexual minority men and women. Findings underscore the importance of supportive policies in reducing risk of alcohol-related problems among sexual minorities.