Harmony Rhoades

Sexually explicit cell phone messaging associated with sexual risk among adolescents

OBJECTIVES: Sexting (sending/receiving sexually explicit texts and images via cell phone) may be associated with sexual health consequences among adolescents. However, to date, no published data from a probability-based sample has examined associations between sexting and sexual activity. METHODS: A probability sample of 1839 students was collected alongside the 2011 Youth Risk Behavior Survey in Los Angeles high schools. Logistic regressions were used to assess the correlates of sexting behavior and associations between sexting and sexual risk-taking. RESULTS: Fifteen percent of adolescents with cell phone access reported sexting, and 54% reported knowing someone who had sent a sext. Adolescents whose peers sexted were more likely to sext themselves (odds ratio [OR] = 16.87, 95% confidence interval [CI]: 9.62–29.59). Adolescents who themselves sexted were more likely to report being sexually active (OR = 7.17, 95% CI: 5.01–10.25). Nonheterosexual students were more likely to report sexting (OR = 2.74, 95% CI: 1.86–4.04), sexual activity (OR = 1.52, 95% CI: 1.07–2.15), and unprotected sex at last sexual encounter (OR = 1.84, 95% CI: 1.17–2.89). CONCLUSIONS: Sexting, rather than functioning as an alternative to “real world” sexual risk behavior, appears to be part of a cluster of risky sexual behaviors among adolescents. We recommend that clinicians discuss sexting as an adolescent-friendly way of engaging patients in conversations about sexual activity, prevention of sexually transmitted infections, and unwanted pregnancy. We further recommend that discussion about sexting and its associated risk behavior be included in school-based sexual health curricula.

Sex risk among young men who have sex with men who use Grindr, a smartphone geosocial networking application.

Objectives: Smartphone geosocial networking applications, like Grindr, have become a new context through which young men who have sex with men (YMSM) can meet potential sex partners. Geosocial networking applications move beyond online social networking websites like Facebook by utilizing smartphones’ geo-location functions to facilitate connections with other users based on their current physical location. This study presents data on HIV risk-taking behaviors of YMSM who use Grindr, comparing the sex behaviors with partners met via the application to behaviors with partners met via other means (e.g., a bar, through friends, online). Methods: Utilizing the geo-locating feature of Grindr, 195 YMSM, aged 18 to 24, were randomly recruited based on their location within West Hollywood and Long Beach, CA between August and October, 2011. Participants completed an online survey. Results: YMSM reported using Grindr for entertainment, socializing, partner seeking, and gay community connection. Seventy-five percent of users reported sexual encounters with partners met on Grindr. YMSM reported significantly higher rates of condom use with partners met on Grindr (59.8%) relative to those partners met elsewhere (41.9%). Only 14.7% reported unprotected anal intercourse (UAI) with their last Grindr partner. YMSM who reported UAI with their last partners from Grindr reported significantly more recent male anal sex partners than YMSM who reported no UAI with their last Grindr-met partners. Conclusions: Grindr was used by YMSM for a variety of reasons, and not exclusively for the purpose of sex partner seeking. Overall YMSM who use Grindr practice safer sex with partners met via the application than with partners met elsewhere. YMSM engaging in UAI with partners on Grindr are an especially high-risk group and should be targeted by prevention efforts. Sexual risk behavior with geosocial networking-located partners could be addressed with mobile HIV prevention applications, or within Grindr and other similar applications.

Sexting and Sexual Behavior Among Middle School Students

OBJECTIVE: It is unknown if “sexting” (ie, sending/receiving sexually explicit cell phone text or picture messages) is associated with sexual activity and sexual risk behavior among early adolescents, as has been found for high school students. To date, no published data have examined these relationships exclusively among a probability sample of middle school students. METHODS: A probability sample of 1285 students was collected alongside the 2012 Youth Risk Behavior Survey in Los Angeles middle schools. Logistic regressions assessed the correlates of sexting behavior and associations between sexting and sexual activity and risk behavior (ie, unprotected sex). RESULTS: Twenty percent of students with text-capable cell phone access reported receiving a sext and 5% reported sending a sext. Students who text at least 100 times per day were more likely to report both receiving (odds ratio [OR]: 2.4) and sending (OR: 4.5) sexts and to be sexually active (OR: 4.1). Students who sent sexts (OR: 3.2) and students who received sexts (OR: 7.0) were more likely to report sexual activity. Compared with not being sexually active, excessive texting and receiving sexts were associated with both unprotected sex (ORs: 4.7 and 12.1, respectively) and with condom use (ORs: 3.7 and 5.5, respectively). CONCLUSIONS: Because early sexual debut is correlated with higher rates of sexually transmitted infections and teen pregnancies, pediatricians should discuss sexting with young adolescents because this may facilitate conversations about sexually transmitted infection and pregnancy prevention. Sexting and associated risks should be considered for inclusion in middle school sex education curricula.

Cyberbullying Perpetration and Victimization Among Middle-School Students

OBJECTIVES We examined correlations between gender, race, sexual identity, and technology use, and patterns of cyberbullying experiences and behaviors among middle-school students. METHODS We collected a probability sample of 1285 students alongside the 2012 Youth Risk Behavior Survey in Los Angeles Unified School District middle schools. We used logistic regressions to assess the correlates of being a cyberbully perpetrator, victim, and perpetrator-victim (i.e., bidirectional cyberbullying behavior). RESULTS In this sample, 6.6% reported being a cyberbully victim, 5.0% reported being a perpetrator, and 4.3% reported being a perpetrator-victim. Cyberbullying behavior frequently occurred on Facebook or via text messaging. Cyberbully perpetrators, victims, and perpetrators-victims all were more likely to report using the Internet for at least 3 hours per day. Sexual-minority students and students who texted at least 50 times per day were more likely to report cyberbullying victimization. Girls were more likely to report being perpetrators-victims. CONCLUSIONS Cyberbullying interventions should account for gender and sexual identity, as well as the possible benefits of educational interventions for intensive Internet users and frequent texters.

The social context of homeless men's substance use

BACKGROUND Homeless men may be at particular risk for the negative health effects of substance use. This cross-sectional study investigates the individual and personal network risk factors associated with substance use in this vulnerable population. METHODS Participants were a representative probability sample of 305 heterosexually active homeless men interviewed from meal programs in the Skid Row region of Los Angeles, CA. Interviews assessed individual, personal network, and substance use characteristics. Logistic regression examined individual and personal network predictors of the three most prevalent substances. RESULTS In the past 6 months, the three most prevalent substances were marijuana (56%), crack (40%), and alcohol to intoxication (38%). The mental health status of homeless men was associated with substance use, with PTSD more common among those who used crack. Riskier networks (comprised of a larger proportion of drug users) were associated with marijuana use, and normative social ties (family, employed and school/work contacts) were associated with a decreased likelihood of crack use. CONCLUSIONS Mental health problems and riskier personal networks are associated with homeless mens substance use. These findings underscore the importance of interventions that focus on improving mental health, mitigating the drug-using norms of personal networks, and helping men to maintain contact with normative, low-risk alters. Mental health care and peer-based, network interventions to reduce substance use should be a priority for heterosexually active homeless men.

Homelessness Experiences, Sexual Orientation, and Sexual Risk Taking Among High School Students in Los Angeles

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 uses 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.

Association between prescription drug misuse and injection among runaway and homeless youth

BACKGROUND The nonmedical use of prescription drugs is the fastest growing drug problem in the United States, disproportionately impacting youth. Furthermore, the population prevalence of injection drug use among youth is also on the rise. This short communication examines the association between current prescription drug misuse (PDM) and injection among runaway and homeless youth. METHODS Homeless youth were surveyed between October 2011 and February 2012 at two drop-in service agencies in Los Angeles, CA. Prevalence ratios (PR) and 95% confidence intervals (CI) for the association between current PDM and injection behavior were estimated. The outcome of interest was use of a needle to inject any illegal drug into the body during the past 30 days. RESULTS Of 380 homeless youth (median age, 21; IQR, 17-25; 72% male), 84 (22%) reported current PDM and 48 (13%) reported currently injecting. PDM during the past 30 days was associated with a 7.7 (95% CI: 4.4, 13.5) fold increase in the risk of injecting during that same time. Among those reporting current PDM with concurrent heroin, cocaine, and methamphetamine use, the PR with injection was 15.1 (95% CI: 8.5, 26.8). CONCLUSIONS Runaway and homeless youth are at increased risk for a myriad of negative outcomes. Our preliminary findings are among the first to show the strong association between current PDM and injection in this population. Our findings provide the basis for additional research to delineate specific patterns of PDM and factors that enable or inhibit transition to injection among homeless and runaway youth.

Bias and variance trade-offs when combining propensity score weighting and regression: with an application to HIV status and homeless men

The quality of propensity scores is traditionally measured by assessing how well they make the distributions of covariates in the treatment and control groups match, which we refer to as “good balance”. Good balance guarantees less biased estimates of the treatment effect. However, the cost of achieving good balance is that the variance of the estimates increases due to a reduction in effective sample size, either through the introduction of propensity score weights or dropping cases when propensity score matching. In this paper, we investigate whether it is best to optimize the balance or to settle for a less than optimal balance and use double robust estimation to adjust for remaining differences. We compare treatment effect estimates from regression, propensity score weighting, and double robust estimation with varying levels of effort expended to achieve balance using data from a study about the differences in outcomes by HIV status in heterosexually active homeless men residing in Los Angeles. Because of how costly data collection efforts are for this population, it is important to find an alternative estimation method that does not reduce effective sample size as much as methods that aggressively aim to optimize balance. Results from a simulation study suggest that there are instances in which we can obtain more precise treatment effect estimates without increasing bias too much by using a combination of regression and propensity score weights that achieve a less than optimal balance. There is a bias-variance tradeoff at work in propensity score estimation; every step toward better balance usually means an increase in variance and at some point a marginal decrease in bias may not be worth the associated increase in variance.

How should network-based prevention for homeless youth be implemented?

We read Green, de la Haye, Tucker & Golinelli’s paper, ‘Shared risk: who engages in substance use with American homeless youth?’ (hereafter RAND) [1], with great interest and appreciation, both for its rigor and potential impact. We would like to open a friendly dialogue about the implementation of network-based prevention for homeless youth. We believe that these results and the results of others suggest that popular opinion leader interventions are not an advisable network-based strategy.

Changes in Social Networks and HIV Risk Behaviors Among Homeless Adults Transitioning Into Permanent Supportive Housing A Mixed Methods Pilot Study

Permanent supportive housing (PSH) has been recognized by the U.S. federal government as the “clear solution” to chronic homelessness. Whether and how access to PSH affects HIV risk is unclear. This mixed methods pilot study uses a convergent parallel design in order to better understand social relationships and HIV risk during the transition from homelessness to PSH. Findings suggest that (a) Sexual activity and HIV risk behaviors increase with housing, (b) Social network size and composition appear to change as individuals transition into PSH, and (c) There is tension between moving forward and leaving behind the past once a person has housing. This study demonstrates that PSH constitutes a specific risk environment that has not been previously investigated.