scholarly journals Assessment of Bias in Estimates of Sexual Network Degree using Prospective Cohort Data

2019 ◽  
Author(s):  
Stephen Uong ◽  
Eli S. Rosenberg ◽  
Steven M. Goodreau ◽  
Nicole Luisi ◽  
Patrick Sullivan ◽  
...  
Keyword(s):  
Predictive Value ◽  
Prospective Cohort ◽  
Critical Role ◽  
Sensitivity Analyses ◽  
Sexual Network ◽  
Baseline Measure ◽  
Cross Sectional ◽  
Sti Prevention ◽  
Sexually Transmitted ◽  
Sex With Men

ABSTRACTBackgroundSexual network degree, a count of ongoing partnerships, plays a critical role in the transmission dynamics of human immunodeficiency virus (HIV) and other sexually transmitted infections (STI). Researchers often quantify degree using self-reported cross-sectional data on the day of survey, which may result in bias because of uncertainty about future sexual activity.MethodsWe evaluated the bias of a cross-sectional degree measure with a prospective cohort study of men who have sex with men (MSM). At baseline, we asked men about whether recent sexual partnerships were ongoing. We confirmed the true, ongoing status of those partnerships at baseline at follow-up. With logistic regression, we estimated the partnership-level predictors of baseline measure accuracy. With Poisson regression, we estimated the longitudinally confirmed degree as a function of baseline predicted degree.ResultsAcross partnership types, the baseline ongoing status measure was 70% accurate, with higher negative predictive value (91%) than positive predictive value (39%). Partnership exclusivity and racial pairing were associated with higher accuracy. Baseline degree generally overestimated confirmed degree. Bias, or number of ongoing partners different than predicted at baseline, was -0.28 overall, ranging from -1.91 to -0.41 for MSM with any ongoing partnerships at baseline. Comparing MSM of the same baseline degree, the level of bias was stronger for black compared to white MSM, and for younger compared to older MSM.ConclusionsResearch studies may overestimate degree when it is quantified cross-sectionally. Adjustment and structured sensitivity analyses may account for bias in studies of HIV or STI prevention interventions.

scholarly journals Sexual network characteristics of men who have sex with men with syphilis and/or gonorrhoea/chlamydia in Lima, Peru: network patterns as roadmaps for STI prevention interventions

2019 ◽  
Vol 95 (5) ◽  
pp. 336-341
Author(s):  
Cherie Blair ◽  
Ryan Colby Passaro ◽  
Eddy R Segura ◽  
Jordan E Lake ◽  
Amaya G Perez-Brumer ◽  
...  
Keyword(s):  
Network Size ◽  
Sexual Partners ◽  
Sexual Network ◽  
Syphilis Infection ◽  
Screening Process ◽  
Cross Sectional ◽  
Sti Prevention ◽  
Network Characteristics ◽  
Condomless Anal Intercourse ◽  
Sex With Men

ObjectiveWhile men who have sex with men (MSM) are disproportionately affected by Peru’s overlapping HIV and STI epidemics, there are few data on how partnership-level and network-level factors affect STI transmission in Peru. We explored partnership-level and network-level factors associated with gonorrhoea/chlamydia (Neisseria gonorrhoeae and/or Chlamydia trachomatis (NG/CT)) and/or syphilis infection among MSM in Peru.MethodsWe present the results of a cross-sectional secondary analysis of MSM (n=898) tested for syphilis and NG/CT infection as part of the screening process for two STI control trials in Lima, Peru. Participants completed questionnaires on demographics, sexual identity and role, characteristics of their three most recent sexual partners (partner sexual orientation, gender, role, partnership type, partner-specific sexual acts) and 30-day sexual network characteristics (number of sexual partners, partnership types, frequency of anal/vaginal intercourse). Participants were tested for syphilis and urethral, rectal and oropharyngeal NG/CT. Differences in network characteristics were analysed with χ2 and Kruskal-Wallis tests.ResultsApproximately 38.9% of participants had a new STI diagnosis (syphilis (rapid plasma reagin ≥16): 10.6%; NG/CT: 22.9%; syphilis-NG/CT coinfection: 5.4%). Condomless anal intercourse (CAI) was not significantly associated with an STI diagnosis. Gay-identified participants with exclusively homosexual networks had a higher prevalence of STIs (47.4%) than gay-identified MSM with only heterosexual/bisexual partners (34.6%, p=0.04), despite reporting fewer sexual partners (any partners: 2, 1–4 vs 3, 2–6; p=0.001; casual partners: 1, 0–3 vs 2, 1–4; p=0.001) and more stable partnerships (1, 0–1 vs 0, 0–1; p=0.003) in the last month.ConclusionsNetwork size and the number of casual sexual partners were associated with NG/CT infection among MSM in Peru. Despite reporting fewer sexual risk behaviours (smaller network size, more stable partnerships, less CAI), MSM with homosexual-only sexual networks had a higher prevalence of NG/CT and syphilis. These findings suggest network composition among MSM in Peru plays an important role in the risk for STI acquisition.

scholarly journals Trends and differences in sexual practices and sexually transmitted infections in men who have sex with men only (MSMO) and men who have sex with men and women (MSMW): a repeated cross-sectional study in Melbourne, Australia

BMJ Open ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. e037608
Author(s):  
Mario Martín-Sánchez ◽  
Richard Case ◽  
Christopher Fairley ◽  
Jane S Hocking ◽  
Catriona Bradshaw ◽  
...  
Keyword(s):  
Health Centre ◽  
Cross Sectional Study ◽  
Sexual Practices ◽  
Sectional Study ◽  
Anal Sex ◽  
Cross Sectional ◽  
Men And Women ◽  
Sexually Transmitted ◽  
Receptive Anal Sex ◽  
Sex With Men

ObjectivesIn the 2010s, there has been an increase in sexually transmitted infections (STI) in men who have sex with men (MSM) in Australia, and since 2015 also in urban heterosexuals. Men who have sex with both men and women (MSMW) have characteristics that may differ from both men who have sex with men only (MSMO) and heterosexual men. We aimed to compare the sexual practices and the trends in HIV/STI positivity between MSMO and MSMW.DesignRepeated cross-sectional study.SettingA sexual health centre in Melbourne, Australia.ParticipantsMSM aged 18 years and above who attended the Melbourne Sexual Health Centre for the first time between 2011 and 2018. This includes 12 795 MSMO and 1979 MSMW.Primary outcome measuresDemographic characterics, sexual practices and HIV/STI positivity.ResultsCompared with MSMW, MSMO were more likely to practice anal sex and to have condomless receptive anal sex with casual male partners, and less likely to have a current regular relationship. Over the 8-year period, there was an increase in condomless receptive anal sex with casual male partners for both groups (MSMO: from 46.2% to 63.3%, ptrend <0.001; MSMW: from 41.3% to 57.9%, ptrend=0.011). Syphilis positivity increased in MSMO (from 5.5% to 7.9%, ptrend=0.012) and MSMW (from 0.9% to 6.4%, ptrend=0.004) and HIV remained stable. Gonorrhoea increased among MSMO from 2011 to 2014 (from 6.7% to 9.6%, ptrend=0.002), and remained stable from 2015 to 2018. MSMO had higher odds of testing positive for gonorrhoea (adjusted OR (aOR) 1.36, 95% CI 1.13 to 1.64), chlamydia (aOR 1.39, 95% CI 1.16 to 1.67), syphilis (aOR 1.74, 95% CI 1.37 to 2.22) and HIV (aOR 4.60, 95% CI 2.43 to 8.70) than MSMW.ConclusionsMSMW have overall lower condomless sex and lower HIV/STI positivity. In the last years, changes in sexual practices in MSM have affected both MSMW and MSMO leading to an increased STI risk.

scholarly journals Sexual health norms and communication patterns within the close social networks of men who have sex with men and transgender women in Lima, Peru: a 2017 cross-sectional study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Amrita Ayer ◽  
Eddy R. Segura ◽  
Amaya Perez-Brumer ◽  
Susan Chavez-Gomez ◽  
Rosario Fernandez ◽  
...  
Keyword(s):  
Social Networks ◽  
Social Network ◽  
Sexual Health ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Sti Prevention ◽  
Sti Testing ◽  
Trans Women ◽  
Sex With Men

Abstract Background Social networks, norms, and discussions about sexual health may inform sexual practices, influencing risk of human immunodeficiency virus (HIV) or sexually transmitted infection (STI) acquisition. To better understand social networks of Peruvian men who have sex with men (MSM) and transgender women (trans women), we examined key social network members (SNMs), participant perceptions of these network members’ opinions toward sexual health behaviors, and associations between network member characteristics and condomless anal intercourse (CAI). Methods In a 2017 cross-sectional study, a convenience sample of 565 MSM and trans women with HIV-negative or unknown serostatus was asked to identify three close SNMs; describe discussions about HIV and STI prevention with each; and report perceived opinions of condom use, HIV/STI testing, and partner notification of STIs. Generalized estimating equations evaluated relationships between SNM characteristics, opinions, and discussions and participant-reported CAI. Results Among participants who identified as MSM, 42.3% of key SNMs were perceived to identify as gay. MSM “never” discussed HIV and STI prevention concerns with 42.4% of heterosexual SNMs, but discussed them “at least once weekly” with 16.9 and 16.6% of gay- and bisexual- identifying SNMs, respectively. Among participants who identified as trans women, 28.2% of key SNMs were perceived as heterosexual; 25.9%, as bisexual; 24.7%, as transgender; and 21.2%, as gay. Trans women discussed HIV/STI prevention least with cis-gender heterosexual network members (40.2% “never”) and most with transgender network members (27.1% “at least once weekly”). Participants perceived most of their close social network to be completely in favor of condom use (71.2% MSM SNMs, 61.5% trans women SNMs) and HIV/STI testing (73.1% MSM SNMs, 75.6% trans women SNMs), but described less support for partner STI notification (33.4% MSM SNMs, 37.4% trans women SNMs). Most participants reported CAI with at least one of their past three sexual partners (77.5% MSM, 62.8% trans women). SNM characteristics were not significantly associated with participant-reported frequency of CAI. Conclusions Findings compare social support, perceived social norms, and discussion patterns of Peruvian MSM and trans women, offering insight into social contexts and sexual behaviors. Trial registration The parent study from which this analysis was derived was registered at ClinicalTrials.gov (Identifier: NCT03010020) on January 4, 2017.

Triple site sexually transmitted infection testing as a crucial component of surveillance for men who have sex with men: A prospective cohort study

2021 ◽  
pp. 095646242110474
Author(s):  
Roy Zucker ◽  
Michael Gaisa ◽  
Keith Sigel ◽  
Ilan Singer ◽  
Amos Adler ◽  
...  
Keyword(s):  
Cohort Study ◽  
Prospective Cohort Study ◽  
Prospective Cohort ◽  
Study Groups ◽  
Sexual Risk Taking ◽  
Syphilis Infection ◽  
Transmitted Infection ◽  
Sexually Transmitted ◽  
Crucial Component ◽  
Sex With Men

Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) infections are common among men who have sex with men (MSM). Many oropharyngeal and anorectal infections remain asymptomatic. We aimed to evaluate triple-site screening following PrEP introduction. We enrolled a prospective cohort study including 210 asymptomatic MSM during 2019–2020, analyzed by groups: HIV positive (HIV+), HIV−uninfected using PrEP (HIV−/PrEP+), or HIV-uninfected not using PrEP (HIV−/PrEP−). A self-administered questionnaire captured demographic information and sexual risk-taking behaviors. CT/NG testing results were compared between study groups and predictors of infection were evaluated. We included 59 HIV+, 70 HIV−/PrEP+, and 81 HIV−/PrEP− subjects. 30% ( n = 62) of participants tested positive for CT/NG. HIV−/PrEP+ group had highest proportion of infections ( n = 33, 47%) followed by HIV−/PrEP− ( n = 16, 22%) and HIV+ ( n=13, 20%; p < .001). Importantly, 98% (80/82) of pharyngeal/anorectal CT/NG infections were missed in genitourinary tract screening alone. PrEP use and previous syphilis infection were the strongest risk factor for CT/NG. Extra-genital asymptomatic CT/NG infections were prevalent among MSM. These data highlight the importance of routine extra-genital CT/NG testing in asymptomatic sexually active MSM. The study describes the consequences for three-site testing lack of implementation in the PrEP era.

scholarly journals Does Penis Size Influence Sexual Behaviour of Men who Have Sex with Men?

2018 ◽  
Vol 35 (4) ◽  
pp. 311-319
Author(s):  
Milan Bjekić ◽  
Sandra Šipetić-Grujičić ◽  
Hristina Vlajinac ◽  
Ivana Dunić
Keyword(s):  
Sexually Transmitted Diseases ◽  
Sexual Behaviour ◽  
Body Part ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Sexual Role ◽  
Sexually Transmitted ◽  
Penis Size ◽  
Sex With Men ◽  
The City

Abstract Penis size is a major body image concern for the majority of men in western nations, while in gay culture the penis has become a body part linked to sexual attractiveness and viability. The aim of this study was to reveal influence of the perceived penis size on sexual behaviour, condom use, sexually transmitted infections and men’s sexual positioning among men who have sex with men. In this cross-sectional study, the data were collected from consecutive men who have sex with men who attended Counselling for Sexually Transmitted Diseases at the City Institute for Skin and Venereal Diseases in Belgrade, Serbia. Out of 319 participants, 6.6% perceived their penis as "below average", 71.5% as "average", and 21.9% as "above average". In comparison with men with an average penis, men with below average penis were more frequently unsatisfied with their penis size (p < 0.05), more frequently lied to others about their penis size (p < 0.001) and took more frequently the passive sexual role (p < 0.05). Men with above average penis were more frequently satisfied with their penis size (p < 0.001), took more frequently the active sexual role (p < 0.01), they had more sexual partners (p < 0.05), more problems with a tight condom (p < 0.001) and more gonorrhoea/Chlamydia infections (p < 0.001) than men with an average penis. Perception of one’s penis size was associated with some aspects of sexual behaviour and the frequency of sexually transmitted diseases.

Associations between economic dependence, sexual behaviours, and sexually transmitted infections among young, Black, gay, bisexual and other men who have sex with men living with and without HIV in Jackson, Mississippi, USA

Sexual Health ◽  
2018 ◽  
Vol 15 (5) ◽  
pp. 473 ◽  
Author(s):  
Kalysha Closson ◽  
Rachel Vickers Smith ◽  
Gbolahan Olarewaju ◽  
Richard Crosby
Keyword(s):  
Sexual Health ◽  
Relationship Power ◽  
Hiv Status ◽  
Economic Dependence ◽  
Sti Prevention ◽  
Sexually Transmitted ◽  
Sexual Behaviours ◽  
Sexually Transmissible Infections ◽  
The Usa ◽  
Sex With Men

Background In the USA, young Black gay, bisexual or other men who have sex with men (YBMSM) bear the largest burden of HIV incidence. The aim of this study is to examine the independent associations between economic dependency on a sexual partner and several HIV risk behaviours and sexual health outcomes among YBMSM living in Jackson, Mississippi, USA. Methods: Baseline data from 589 YBMSM, with a median age of 22.0 years (IQR = 15–25) participating in a brief sex-positive HIV and STI prevention intervention, were used to measure the association between six sexual behaviours, sexually transmissible infections (STIs) status at baseline and economic dependence. Bivariate χ2 associations were tested and regression models adjusted for education level (≤ high school), employment and HIV-status. Results: In regressions, of the six sexual behaviours reported in the last 90 days and six STIs tested at baseline, economically dependent YBMSM were more likely to report condomless anal receptive sex (aOR = 2.19, 95%CI = 1.25–3.83), ≥3 partners as a top (aOR = 1.99, 95%CI = 1.17–340), ≥3 sex partners as a bottom (aOR = 2.07, 95%CI = 1.24–3.45), ≥3 sex acts as a bottom (aOR = 2.10, 95%CI = 1.16–3.82) and testing positive for oral gonorrhoea (aOR = 2.39, 95%CI = 1.18–4.83) after controlling for HIV status, employment and education. Conclusions: Interventions should consider how poverty, unemployment and economic dependence interact to influence relationship power imbalances, condom use and sexual positioning agency, and sexual health for key populations of MSM.

HIV and STI prevalence and testing history among men who have sex with men in Hanoi, Vietnam

2021 ◽  
pp. 095646242110601
Author(s):  
Jane S Chen ◽  
Sara N Levintow ◽  
Ha V Tran ◽  
Teerada Sripaipan ◽  
Minh X Nguyen ◽  
...  
Keyword(s):  
Social Stigma ◽  
Prevalence Odds Ratio ◽  
Cross Sectional ◽  
Sexually Transmitted ◽  
Healthcare Settings ◽  
Sti Testing ◽  
Hiv And Sti Testing ◽  
Sex With Men ◽  
Simplex Virus ◽  
Herpes Simplex Virus 2

Background HIV and other sexually transmitted infections (STIs) have disproportionately affected communities of men who have sex with men (MSM). We describe HIV and STI prevalence and testing patterns among urban Vietnamese MSM. Methods We conducted a cross-sectional community-based study of MSM in Hanoi, Vietnam in 2016. Participants self-reported experiences of social stigma in healthcare settings and previous HIV and STI testing. STI testing included HIV, herpes simplex virus-2 (HSV-2), syphilis, gonorrhea, and chlamydia. Results 205 MSM participated in the study. STI prevalence was HIV (10%), HSV-2 (4%), syphilis (13%), gonorrhea (34%), and chlamydia (19%). More than half (55%) of participants tested positive for at least one STI. Most participants had been previously tested for HIV or another STI (72%), with 24% previously receiving a positive result. Perceived and enacted social stigma in healthcare contexts was negatively associated with previous HIV or STI testing (adjusted prevalence odds ratio (aPOR): 0.22; 95% confidence interval (CI): 0.10–0.48). Discussion High prevalence of STIs was observed among Vietnamese MSM, and perceived and enacted stigma was related to HIV and STI testing. Our findings reaffirm the importance of regular STI screening among this population as well as additional outreach to promote safe HIV and STI healthcare engagement.

Acceptability of a digital patient notification and linkage-to-care tool for French PrEPers (WeFLASH©): Key stakeholders' perspectives

2019 ◽  
Vol 30 (14) ◽  
pp. 1397-1407
Author(s):  
David Lessard ◽  
Alexandre Aslan ◽  
Jérémy Zeggagh ◽  
Stéphane Morel ◽  
David Michels ◽  
...  
Keyword(s):  
Linkage To Care ◽  
Epidemiological Data ◽  
Management Decision ◽  
Time Data ◽  
Transmitted Infection ◽  
Sti Prevention ◽  
Sexually Transmitted ◽  
Sex With Men ◽  
Access To Data ◽  
Exposure Prophylaxis

The objective of this study was to describe stakeholders’ perspectives on the acceptability of WeFLASH© (AADISS, Paris, France), a digital smartphone sexually transmitted infection (STI) patient notification (PN) tool to be launched among French HIV pre-exposure prophylaxis users (PrEPers). In Paris, Lyon, and Nice, we conducted 2-hour focus group discussions with PrEPers (n = 21) and community mediators (n = 10), and one-on-one interviews with PrEP-prescribing physicians (n = 5) and HIV/STI management decision-makers (n = 4). Recordings were transcribed. The analysis focused on perceived benefits and risks. Concerning benefits, participants mentioned that WeFLASH© could provide: improved PN and STI screening, by refining the notification of anonymous partners; customized linkage-to-care, by providing users with tailored information on care; and transferable epidemiological data, by filling a need for real-time data. Participants anticipated risks for: privacy and confidentiality and suggested specific security settings to protect users’ identity; sexual behavior and suggested game-like functions to improve the integration of the tool in sexual contexts; and fairness and emphasized the importance of making WeFLASH© accessible to all men who have sex with men. WeFLASH© could facilitate PN for an increasing proportion of anonymous partners met online, and empower users, including notified partners, on questions of confidentiality and consent, access to STI prevention and screening services, and access to data.

scholarly journals Cross-Sectional Study of Sexual Behavior, Alcohol Use, and Mental Health Conditions Associated With Sexually Transmitted Infections Among Deploying Shipboard US Military Personnel

2019 ◽  
Vol 184 (11-12) ◽  
pp. e693-e700 ◽  
Author(s):  
Judith Harbertson ◽  
Paul T Scott ◽  
Hector Lemus ◽  
Nelson L Michael ◽  
Braden R Hale
Keyword(s):  
Mental Health ◽  
Alcohol Use ◽  
Sexually Transmitted Infections ◽  
Military Personnel ◽  
Cross Sectional Study ◽  
Sexual Partners ◽  
Cross Sectional ◽  
Sexually Transmitted ◽  
Us Military ◽  
Sex With Men

Abstract Introduction Limited comprehensive data exist on risk behavior associated with sexually transmitted infections (STI) among ship-assigned US military personnel during the predeployment time period (PDT). This study examined whether sexual risk behaviors, alcohol use, involuntary drug consumption (IDC), posttraumatic stress disorder (PTSD), and depression during the 12 months prior to deployment were associated with provider-diagnosed STIs in this population. Materials and Methods Using cross-sectional data collected during 2012–2014 among sexually active personnel, multivariable regression assessed factors associated with STIs among all men (n = 1,831). Stratified analyses were conducted among men who have sex with women (MSW, n = 1,530), men who have sex with men or men and women (MSM, n = 83), and excluded those not reporting sexual partner gender (n = 218). Results Among MSW, transactional sex (AOR 3.8, 95% CI 1.5–9.4) meeting sexual partners at work (AOR 4.3, 95% CI 2.0–9.2), IDC (AOR 6.6, 95% CI 3.0–14.5), and incomplete mental health assessments (AOR 4.4, 95% CI 1.6–12.0) were significantly associated with STIs after adjustment. Among all men, those who identified as MSM (AOR 4.6, 95% CI 1.9–11.2) and drug screen positive (AOR 3.3, 95% CI 1.3–8.6) were significantly more likely to report an STI. Conclusions Previously unreported factors significantly associated with STIs at the PDT among MSW in the adjusted analysis were meeting sexual partners at work and IDC. IDC during the PDT warrants further exploration. These results can inform tailored STI reduction interventions among shipboard personnel and similarly aged civilians undergoing similar transition/travel experiences.

Risky sexual behavior and sexually transmitted infections among men who have sex with men and purchase sex attending an Israeli sexually transmitted infection clinic

2019 ◽  
Vol 31 (3) ◽  
pp. 236-243 ◽  
Author(s):  
Rivka S Rich ◽  
Alex Leventhal ◽  
Rivka Sheffer ◽  
Zohar Mor
Keyword(s):  
High Risk ◽  
Sexually Transmitted Infections ◽  
Sexual Behaviors ◽  
Risky Sexual Behavior ◽  
Laboratory Data ◽  
Cross Sectional Study ◽  
Transmitted Infection ◽  
Cross Sectional ◽  
Sexually Transmitted ◽  
Sex With Men

Men who have sex with men (MSM) and purchase sex (MPS) are a sub-group potentially at high risk for acquiring and transmitting sexually transmitted infections (STIs). This is a hard-to-reach population resulting in a scarcity of studies covering the issue. This cross-sectional study aimed to assess the association between purchasing sex and high-risk behaviors related to HIV/STI transmission and appraise the STI prevalence among MSM. All MSM who attended the STI clinic in Tel Aviv between 2003 and 2010 were included. Demographics, behavioral, clinical, and laboratory data were compared between MPS and non-MPS to identify high-risk sexual behaviors and STI prevalence associated with purchasing sex. Of the first visits of 2694 MSM who attended the STI clinic during the study period, 151 (5.6%) paid for sex. MPS were more commonly older and married than non-MPS. MPS were more likely to engage in behaviors associated with high risk for HIV/STI transmission, including infrequent condom use during anal sex, substance use during sex, and selling sex themselves. MPS had a higher STI prevalence than non-MPS, although this was not statistically significant ( p = 0.05). These findings highlight the need to establish culturally tailored interventions for MPS addressing the potential risks associated with purchasing sex.

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