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TBCK syndrome is an autosomal recessive disorder primarily characterized by global developmental delay, hypotonia, abnormal magnetic resonance imaging (MRI), and distinctive craniofacial phenotypes. High variability is observed among affected individuals and their corresponding variants, making clinical diagnosis challenging. Here, we discuss recent breakthroughs in clinical considerations, TBCK function, and therapeutic development.

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Purpose: We developed a multiyear database of sexual orientation- and gender identity-related U.S. state laws to advance sexual and gender minority (SGM) health research and practice and assessed variability in U.S. state laws from 1996 through 2016 across all U.S. states and D.C. Methods: Between 2014 and 2016, a multidisciplinary group of SGM health researchers and legal experts used secondary and primary legal sources and policy surveillance methods to systematically develop a state-level legal database of 30 sexual orientation- and gender identity-related U.S. state laws in 9 legal domains from 1996 through 2016. We calculated descriptive statistics and created maps to observe the distribution of these laws over both time and space. Results: Although progress has occurred in some domains, such as same-sex marriage, adoption, and employment discrimination, significant challenges to SGM rights remain, especially with regard to HIV criminalization, transgender rights, and discrimination in health care settings. Further, notable variation exists in the presence of protective lesbian, gay, bisexual, transgender, queer (LGBTQ) state laws across U.S. states and D.C. Conclusion: Efforts to repeal harmful U.S. state laws are needed, as are new laws, policies, regulations, practices, and norms that advance social justice and health equity for all SGM people.

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Lamins interact with a host of nuclear membrane proteins, transcription factors, chromatin regulators, signaling molecules, splicing factors, and even chromatin itself to form a nuclear subcompartment, the nuclear lamina, that is involved in a variety of cellular processes such as the governance of nuclear integrity, nuclear positioning, mitosis, DNA repair, DNA replication, splicing, signaling, mechanotransduction and -sensation, transcriptional regulation, and genome organization. Lamins are the primary scaffold for this nuclear subcompartment, but interactions with lamin-associated peptides in the inner nuclear membrane are self-reinforcing and mutually required. Lamins also interact, directly and indirectly, with peripheral heterochromatin domains called lamina-associated domains (LADs) and help to regulate dynamic 3D genome organization and expression of developmentally regulated genes.

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This article examines human papillomavirus (HPV) self-sampling as an approach to cervical cancer prevention and the ways self-sampling kits are promoted directly to consumers in the United States. Public health, biomedicine and health tech have increasingly imagined self-sampling, which allows individuals to collect their own vaginal specimen, mail to a laboratory for testing and receive delivered results, as a component of cervical cancer prevention and sexual health promotion. This article examines the scientific and biomedical claims used to configure the problem in need of this solution and the ways persons, publics and markets are established. We analyse scientific literature, interviews with clinicians and other key actors, and websites of directly to consumers (DTC) companies. HPV self-sampling is constructed as both a solution to inequities and gaps in cervical cancer screening and a solution to the wants and needs of those already engaged in self-projects of body monitoring and risk reduction. These multidirectional biomedical tendencies also reveal how sexuality and sexual health and cervical cancer prevention and sexual health promotion are entangled objects. While we do not want to undermine the potential of HPV self-sampling, we encourage a focus on equity and care and not commodified markets that reinforce notions of 'good' patients monitoring their health.

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BACKGROUND: Differential sexual history assessment, whereby certain groups are more or less likely to be asked questions about their sexual behavior by a health care provider, may lead to differential sexual health care and counseling. METHODS: Using nationally representative data from the 2013 through 2019 waves of the National Survey of Family Growth, we examined racial/ethnic and sexual orientation identity differences in receiving a sexual history assessment from a health care provider in the last 12 months among U.S. women aged 15-44 years (N = 14,019). RESULTS: Adjusting for survey wave, Black and Latina heterosexual women; White, Black, and Latina bisexual women; and Black or Latina lesbian women had higher odds (odds ratio range, 1.47 [Latina heterosexual] to 2.71 [Black bisexual]) of having received a sexual history assessment in the last 12 months compared with White heterosexual women. All differences except for those among Black or Latina lesbian women persisted after controlling for demographic, socioeconomic, and health care factors (odds ratio range, 1.43 [Latina heterosexual] to 2.14 [Black bisexual]). Of note, Black bisexual women, about whom providers may hold biased assumptions of promiscuity rooted in both racism and biphobia, had the highest predicted probability of being asked about their sexual behavior by a provider. CONCLUSIONS: Person-centered, structurally competent, and anti-oppressive practices and programs aimed at combating bias, stigma, and discrimination in the health care system and facilitating an inclusive clinic environment for all patients are needed to address differences in the provision of sexual health services and promote sexual health equity.

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BACKGROUND: The dynamic 3D organization of the genome is central to gene regulation and development. The nuclear lamina influences genome organization through the tethering of lamina-associated domains (LADs) to the nuclear periphery. Evidence suggests that lamins A and C are the predominant lamins involved in the peripheral association of LADs, potentially serving different roles. RESULTS: Here, we examine chromosome architecture in mouse cells in which lamin A or lamin C are downregulated. We find that lamin C, and not lamin A, is required for the 3D organization of LADs and overall chromosome organization. Striking differences in localization are present as cells exit mitosis and persist through early G1 and are linked to differential phosphorylation. Whereas lamin A associates with the nascent nuclear envelope (NE) during telophase, lamin C remains in the interior, surrounding globular LAD aggregates enriched on euchromatic regions. Lamin C association with the NE is delayed until several hours into G1 and correlates temporally and spatially with the post-mitotic NE association of LADs. Post-mitotic LAD association with the NE, and global 3D genome organization, is perturbed only in cells depleted of lamin C, and not lamin A. CONCLUSIONS: Lamin C regulates LAD dynamics during exit from mitosis and is a key regulator of genome organization in mammalian cells. This reveals an unexpectedly central role for lamin C in genome organization, including inter-chromosomal LAD-LAD segregation and LAD scaffolding at the NE, raising intriguing questions about the individual and overlapping roles of lamin A/C in cellular function and disease.

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OBJECTIVE: Ending the HIV epidemic requires addressing structural determinants of health, including stigma. In this qualitative study, we applied an intersectional framework to study various forms of stigma among Latinx people living with HIV (PLWH). METHOD: We conducted focus groups and individual interviews with Spanish- and English-speaking Latinx PLWH (N = 19) at an HIV safety-net clinic in San Francisco, California. Using thematic analysis, we identified co-occurring forms of stigma impacting the participants' lives. RESULTS: Participants described the weight of co-occuring stigma related to their multiple identities, including homophobia and HIV-related stigma, both of which participants experienced in the U.S. and in their Latin American home countries. Importantly, many participants faced anti-immigrant stigma in their day-to-day interactions, which manifested as structural inequities such as difficulty finding stable housing and employment. CONCLUSIONS: Our findings illustrate experiences of intersectional stigma and systems of oppression. They can be used to inform policies that address social exclusion, discrimination, and stigma among Latinx PLWH. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

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Background: Sexual minority women may use contraception for various reasons but face notable barriers to contraceptive care, including stigma and discrimination. However, studies examining sexual orientation disparities in contraceptive care have largely relied on nonprobability samples of predominately White women and may thus not be generalizable to U.S. women overall or Black and Latina women in particular. Materials and Methods: Using data from the 2006 to 2017 National Survey of Family Growth, a large national probability sample of U.S. women 15-44 years of age (N = 25,473), we used multivariable logistic regression to estimate adjusted odds ratios for receiving a contraceptive method or prescription and contraceptive counseling from a health care provider in the past year among sexual orientation identity and racial/ethnic subgroups of heterosexual, bisexual, and lesbian White, Black, and Latina women relative to White heterosexual women. Results: Among women overall, 33.9% had received contraception and 18.3% had obtained contraceptive counseling. Black (odds ratio [OR] = 0.73, 95% confidence interval [CI]: 0.65-0.82) and Latina (OR = 0.73, 95% CI: 0.64-0.82) heterosexual women, White (OR = 0.80, 95% CI: 0.65-0.99) and Black (OR = 0.43, 95% CI: 0.32-0.58) bisexual women, and White (OR = 0.23, 95% CI: 0.13-0.43), Black (OR = 0.19, 95% CI: 0.09-0.40), and Latina (OR = 0.08, 95% CI: 0.03-0.22) lesbian women had significantly lower adjusted odds of receiving contraception compared with White heterosexual women. White (OR = 0.36, 95% CI: 0.15-0.85), Black (OR = 0.42, 95% CI: 0.18-0.98), and Latina (OR = 0.22, 95% CI: 0.09-0.53) lesbian women also had significantly lower adjusted odds of obtaining contraceptive counseling relative to White heterosexual women. Conclusions: Policies, programs, and practices that facilitate access to person-centered contraceptive care among marginalized sexual orientation identity and racial/ethnic subgroups of U.S. women are needed to promote reproductive health equity.

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Alcohol use is a key risk factor for HIV infection among men who have sex with men (MSM), primarily because it interferes with condom use. However, little is known about the cognitive-emotional mechanisms through which alcohol influences decisions to use condoms with high-risk partners among MSM. In this study, we tested whether alcohol-related deficits in inhibitory control and attention bias toward sexual cues (vs. condoms and neutral cues) accounted for increases in condomless anal sex (CAS) intentions after drinking among MSM. Heavy-drinking, high-risk MSM (N = 83) were randomly assigned to receive (a) alcohol, (b) placebo, or (c) control beverages before behavioral tasks assessing inhibitory control and attention bias, and a video-based sexual risk scenario that assessed several aspects of sexual decision making. Results showed that inhibitory control and attention bias to sexual cues did not mediate associations between intoxication and CAS intentions. Inhibitory control deficits also did not moderate the indirect effects of intoxication on CAS intentions through attention bias. Three-way interactions between alcohol/placebo condition, inhibitory control, and attention bias were also not significant. Together, these findings provide little evidence that these two processes play a significant role in alcohol-involved HIV risk, at least as assessed by the specific tasks used in this study. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

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HIV cure research carries serious risks and negligible benefits. We investigated how participants understand these risks and what influences their willingness to participate. Through internet-based and in-person convenience sampling, 86 HIV+ participants completed an experimental survey. Participants were randomized to read a standard consent form describing a hypothetical HIV cure study or one adapted using Fuzzy Trace Theory-a decision-making model to facilitate complex information processing. We measured consent understanding and cognitive (e.g., safe/harmful) and affective (e.g., concerning, satisfying) evaluations of HIV cure research. Participants who read the adapted consent form had improved consent understanding, but only positive affective evaluations were associated with a willingness to participate. Consent processes can use decision-making theories to facilitate comprehension of study information.

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Purpose: Our goal was to examine sexual orientation identity disparities in mammography in relationship to race/ethnicity among U.S. women. Methods: Using nationally representative 2013-2017 National Health Interview Survey data, we used multivariable logistic regression to estimate the odds of receiving a mammogram in the past year in relationship to sexual orientation identity among White, Black, and Latina U.S. women 40-75 years of age (N = 45,031) separately, adjusting for demographic factors. We also assessed whether socioeconomic and health care factors attenuated sexual orientation identity disparities in mammography across racial/ethnic groups. Results: Among White women, bisexual women had significantly lower adjusted odds of mammography compared to heterosexual women (odds ratio = 0.70, 95% confidence interval: 0.50-0.99). Among Black women, the adjusted odds of mammography were significantly higher among bisexual women relative to heterosexual women (2.53, 1.08-5.92). Black lesbian women appeared to have lower adjusted odds of mammography compared to their heterosexual counterparts; however, this difference was not statistically significant (0.80, 0.46-1.38). Similarly, among Latina women, lesbian women also seemed to have lower adjusted odds of mammography relative to heterosexual women, but this disparity was also not statistically significant (0.64, 0.37-1.13). Adding socioeconomic factors completely attenuated the disparity between White bisexual and heterosexual women (0.76, 0.52-1.10). Conclusions: Sexual orientation identity disparities in receiving a mammogram in the past year differed in relationship to race/ethnicity among White, Black, and Latina U.S. women. Additional research with larger samples of Black and Latina lesbian and bisexual women is needed to more accurately estimate and explain observed differences.

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Ecological momentary assessment (EMA) is a set of longitudinal methods that researchers can use to understand complex processes (e.g., health, behavior, emotion) in "high resolution." Although technology has made EMA data collection easier, concerns remain about the consistency and quality of data collected from participants who are enrolled and followed online. In this study, we used EMA data from a larger study on HIV-risk behavior among men who have sex with men (MSM) to explore whether several indicators of data consistency/quality differed across those who elected to enroll in-person and those enrolled online. One hundred MSM (age 18-54) completed a 30-day EMA study. Forty-five of these participants chose to enroll online. There were no statistically significant differences in response rates for any survey type (e.g., daily diary [DD], experience sampling [ES], event-contingent [EC]) across participants who enrolled in-person versus online. DD and ES survey response rates were consistent across the study and did not differ between groups. EC response rates fell sharply across the study, but this pattern was also consistent across groups. Participants' responses on the DD were generally consistent with a poststudy follow-up Timeline Followback (TLFB) with some underreporting on the TLFB, but this pattern was consistent across both groups. In this sample of well-educated, mostly White MSM recruited from urban areas, EMA data collected from participants followed online was as consistent, reliable, and valid as data collected from participants followed in-person. These findings yield important insights about best practices for EMA studies with cautions regarding generalizability. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

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Objective: To ascertain the magnitude and potential mechanisms of racial/ethnic disparities in initiating and completing the 3-dose human papillomavirus (HPV) vaccine among U.S. women in the post-Affordable Care Act era.Design: Using 2015 National Health Interview Survey data, we used logistic regression to estimate odds ratios (OR) and 95% confidence intervals (CI) for the association between race/ethnicity and HPV vaccination initiation and completion among black, Latina, Asian, and white U.S. women aged 18-31 years, adjusting for age and geographic region. We also examined the role of socioeconomic and health care factors in potentially explaining racial/ethnic disparities in HPV vaccine uptake and stratified our analyses by age (ages 18-22 and 23-31 years).Results: The prevalence of HPV vaccination initiation and completion among U.S. women aged 18-31 years overall was 35.4% and 22.7%, respectively. We observed no statistically significant difference in the odds of HPV vaccination initiation or completion by race/ethnicity among women aged 18-22 years, adjusting for age and geographic region. Among women aged 23-31 years, Latina ([odds ratio=] 0.59; [95% confidence interval:] 0.47, 0.76) and Asian (0.51; 0.34, 0.75) women had significantly lower adjusted odds of initiating HPV vaccination compared to white women. Further, relative to white women, black (0.46; 0.32, 0.67), Latina (0.45; 0.32, 0.64), and Asian (0.46; 0.28, 0.78) women had significantly lower adjusted odds of completing HPV vaccination. Adding socioeconomic factors to the models attenuated the HPV vaccination initiation adjusted odds ratios for Latina vs. white women and the HPV vaccination completion adjusted odds ratios for both black and Latina vs. white women. The inclusion of health care factors into the models did not further attenuate these odds ratios.Conclusion: Policies and programs that promote socioeconomic equity may mitigate HPV vaccination disparities between black and Latina women and white women. Additional research is needed to identify the drivers of HPV vaccination disparities between subgroups of Asian women and white women.

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Introduction: Sexual and behavioral health disparities have been consistently demonstrated between African American and White adults and between sexual minority and heterosexual communities in the United States; however, few studies using nationally representative samples have examined disparities between sexual minority and heterosexual adults within African American populations. The purpose of this study was to examine the prevalence of sexual and behavioral health outcomes between sexual minority and heterosexual African American adults and to examine whether there were different patterns of disparities for African American sexual minority men and women, respectively. Methods: We analyzed data from 4502 African American adults who participated in the 2001-2015 waves of the National Health and Nutrition Examination Survey. Using multivariable analyses, we examined differences in HIV, sexually transmitted infections, mental health, and substance use among African American sexual minority and heterosexual men and women. Results: After adjusting for sociodemographic variables, African American sexual minority men had significantly higher odds of HIV, sexually transmitted infections, and poor mental health compared to their heterosexual male counterparts, whereas African American sexual minority women had significantly higher odds of Hepatitis C, poor mental health, and substance use compared to their heterosexual female counterparts. Conclusions: These findings demonstrate notable sexual orientation disparities among African American adults. Disparities persisted beyond the role of sociodemographic factors, suggesting that further research utilizing an intersectional approach is warranted to understand the social determinants of adverse health outcomes among African American sexual minority men and women.

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BACKGROUND: In a nationally representative sample of South Korean adults, we investigated the association between socioeconomic status (SES) and physical activity level, and whether this association varied by age group. METHODS: We used data from 5065 subjects aged ≥19 years who participated in the 6th Korea National Health and Nutrition Examination Survey. Weighted logistic regression examined the SES-physical activity association. Using the International Physical Activity Questionnaire short form, physical activity level was categorized into two groups: meeting the guideline (≥150 min/week of moderate intensity physical activity) and not meeting the guideline. Annual household income quartile (first quartile = highest income) and education (elementary, middle school, high school, and college graduates) were used as SES indicators. Sociodemographic covariates included in the adjusted models were marital status, town type (rural/urban), dwelling type, perceived health, federal allowance support (yes/no), and working- and sleeping-hours. RESULTS: In unadjusted models, low income and low education were both associated with significantly lower odds of meeting the physical activity guideline. The income-physical activity association was moderated by age group in both unadjusted and adjusted models. Specifically, among those age < 45 years, those in the third quartile group had 41% higher odds (p < 0.01) of meeting the physical activity guideline compared with the first quartile group, after adjusting for covariates. In contrast, among those age ≥ 45 years, those in the third quartile group had 16% lower odds (p < 0.01) of meeting the physical activity guideline compared with the first quartile group, after adjusting for covariates. Furthermore, the education-physical activity association was moderated by age but only in the adjusted model. Specifically, among those age < 45 years, high school graduates had a 21% higher odds of meeting the physical activity guideline compared with college graduates (p = 0.08). In contrast, among those age ≥ 45 years, high school graduates had a 23% lower odds of meeting the physical activity guideline compared with college graduates (p = 0.01). CONCLUSION: Future policies that aim to address SES-related health disparities in physical activity among adults in South Korea should consider the different patterns of physical activity in accordance with SES and age.

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Purpose: We examined differences in lifetime human immunodeficiency virus (HIV) testing in relation to both sexual orientation identity and race/ethnicity among U.S. women and men. Methods: We used 2013-2017 National Health Interview Survey data and multivariable logistic regression to assess the distribution of lifetime HIV testing across and within sexual orientation identity and racial/ethnic groups of U.S. women (n = 60,867) and men (n = 52,201) aged 18-64 years. Results: Among women, Black lesbian (74.1%) and bisexual (74.0%) women had the highest prevalence whereas Asian lesbian women (32.5%) had the lowest prevalence of lifetime HIV testing. Among men, the prevalence of lifetime HIV testing was the highest among Latino gay men (92.6%) and the lowest among Asian heterosexual men (32.0%). In most cases, Black women and Black and Latino men had significantly higher adjusted odds whereas Asian women and men had lower adjusted odds of lifetime HIV testing compared with their White counterparts within sexual orientation identity groups. In many instances, bisexual women and gay men had significantly higher adjusted odds of lifetime HIV testing relative to their heterosexual counterparts within racial/ethnic groups. Compared with White heterosexual individuals, most sexual orientation identity and racial/ethnic subgroups had significantly higher adjusted odds whereas Asian heterosexual, bisexual, and lesbian women and Asian heterosexual and bisexual men may have lower adjusted odds of lifetime HIV testing. Conclusion: Culturally relevant, linguistically appropriate, and structurally competent programs and practices are needed to facilitate lifetime HIV testing among diverse sexual orientation identity and racial/ethnic subgroups of women and men, including multiply marginalized subgroups that are undertested or disproportionately affected by HIV/AIDS.

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"Just-in-time" interventions (JITs) delivered via smartphones have considerable potential for reducing HIV risk behavior by providing pivotal support at key times prior to sex. However, these programs depend on a thorough understanding of when risk behavior is likely to occur to inform the timing of JITs. It is also critical to understand the most important momentary risk factors that may precede HIV risk behavior, so that interventions can be designed to address them. Applying machine learning (ML) methods to ecological momentary assessment data on HIV risk behaviors can help answer both questions. Eighty HIV-negative men who have sex with men (MSM) who were not on PrEP completed a daily diary survey each morning and an experience sampling survey up to six times per day via a smartphone application for 30 days. Random forest models achieved the highest area under the curve (AUC) values for classifying high-risk condomless anal sex (CAS). These models achieved 80% specificity at a sensitivity value of 74%. Unsurprisingly, the most important contextual risk factors that aided in classification were participants' plans and intentions for sex, sexual arousal, and positive affective states. Findings suggest that survey data collected throughout the day can be used to correctly classify about three of every four high-risk CAS events, while incorrectly classifying one of every five non-CAS days as involving high-risk CAS. A unique set of risk factors also often emerge prior to high-risk CAS events that may be useful targets for JITs.

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This study tested a mobile health (mHealth) intervention program entitled WeTest, delivered via the WeChat mobile app, to promote oral HIV self-testing (HIVST) among MSM in Hefei, China. A total of 100 MSM participants enrolled, completed baseline assessment, were randomly assigned to intervention or control, and completed 6-month follow-up surveys. Intervention participants (n = 50) received two oral HIVST kits and access to WeTest, a private WeChat group which provided app-based messages and referrals to health services related to HIV. Control participants (n = 50) received two oral HIVST kits only. All participants received instructions to upload photographic results of their oral HIVST, which were sent to the project counselor via a secure WeChat online portal; immediate contact and referrals were made to any participants who tested HIV-positive. In GEE analyses adjusting for time effects and baseline confounders, intervention participants had significantly higher rates of HIV testing (adjusted rate ratio RR = 1.99, 95% confidence interval (CI) 1.07-3.84) and, in particular, higher rates of testing via oral HIVST (adjusted RR = 2.17, 95% CI 1.08-4.37) compared with the control group. Significant time effects were also found such that all participants, regardless of group allocation, had significantly higher rates of reporting consistent condom use with main partners (adjusted RR = 18.13, 95% CI 5.19-63.31) and with non-main partners (adjusted RR = 5.33, 95% CI 2.35-12.08). Findings from this study provide evidence for the feasibility, acceptability and preliminary effects of this mHealth approach to promoting oral HIVST among MSM in China.

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BACKGROUND: Suicide and alcohol use disorders (AUD) have high public health and economic costs. We investigate the relationship between religious features that are external to the individual (hereafter, contextual religiosity) and individuals' risk of AUD and suicidal thoughts. METHODS: Data are from Wave 2 of the National Epidemiological Survey on Alcohol and Related Conditions (analytic N = 34,326). Regression analysis assessed whether contextual (i.e., Geographic state) religiosity and membership rates of Catholics and the three major Protestant traditions, are associated with DSM-IV AUD risk in the past 12 months and suicidal thoughts since last interview, controlling for individual and state-level covariates. In a secondary analysis, we test for interactions between individual race/ethnicity and contextual religiosity on the outcomes since prior work suggested differences by race and individual religiosity. RESULTS: Some contextual religious variables were significantly associated with AUD risk but not suicidal thoughts. Individuals living in a state with higher membership rates of Evangelical Protestant had higher AUD risk (Adjusted Relative Risk [ARR]=1.27, 95%CI=1.08-1.49). Individuals living in states with higher membership rates of Historically Black Protestant had a lower risk of AUD (ARR=0.83, 95% CI=0.72-0.96). The interaction between individual race and contextual-level religious variables on the outcomes were not significant. LIMITATIONS: NESARC is an observational cross-sectional so causality between religiosity and the outcomes cannot be established. CONCLUSIONS: The risk of AUD among individuals varies depending on the religious membership rates among Protestant groups within their geographic state of residence. Contextual religiosity may impact AUD risk above and beyond one's individual religiosity.

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BACKGROUND: Geofencing offers new opportunities to study how specific environments affect alcohol use and related behavior. In this study, we examined the feasibility of using geofencing to examine social/environmental factors related to alcohol use and sexual perceptions in a sample of gay and bisexual men (GBM) who engage in heavy drinking and high-risk sex. METHODS: HIV-negative GBM (N = 76) completed ecological momentary assessments for 30 days via a smartphone application and were prompted to complete surveys when inside general geofences set around popular bars and clubs. A subset (N = 45) were also asked to complete surveys when inside personal geofences, which participants set themselves by identifying locations where they typically drank heavily. RESULTS: Approximately 49% of participants received a survey prompted by a general geofence. Among those who identified at least 1 personal drinking location, 62.2% received a personal geofence-prompted survey. Of the 175 total location-based surveys, 40.2% occurred when participants were not at the location that was intended to be captured. Participants reported being most able to openly express themselves at gay bars/clubs and private residences, but these locations were also more "sexualized" than general bars/clubs. Participants did not drink more heavily at gay bars/clubs, but did when in locations with more intoxicated patrons or guests. CONCLUSIONS: Geofencing has the potential to improve the validity of studies exploring environmental influences on drinking. However, the high number of "false-positive" prompts we observed suggests that geofences should be used carefully until improvements in precision are more widely available.

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