Predicting the diagnosis of HIV and sexually transmitted infections among men who have sex with men using machine learning approaches

ObjectivesWe aimed to develop machine learning models and evaluate their performance in predicting HIV and sexually transmitted infections (STIs) diagnosis based on a cohort of Australian men who have sex with men (MSM).MethodsWe collected clinical records of 21,273 Australian MSM during 2011–2017. We compared accuracies for predicting HIV and STIs (syphilis, gonorrhoea, chlamydia) diagnosis using four machine learning approaches against a multivariable logistic regression (MLR) model.ResultsMachine learning approaches consistently outperformed MLR. Gradient boosting machine (GBM) achieved the highest area under the receiver operator characteristic curve for HIV (76.3%) and STIs (syphilis, 85.8%; gonorrhoea, 75.5%; chlamydia, 68.0%), followed by extreme gradient boosting (71.1%, 82.2%, 70.3%, 66.4%), random forest (72.0%, 81.9%, 67.2%, 64.3%), deep learning (75.8%, 81.0%, 67.5%, 65.4%) and MLR (69.8%, 80.1%, 67.2%, 63.2%). GBM models demonstrated the ten greatest predictors collectively explained 62.7-73.6% of variations in predicting HIV/STIs. STIs symptoms, past syphilis infection, age, time living in Australia, frequency of condom use with casual male sexual partners during receptive anal sex and the number of casual male sexual partners in the past 12 months were most commonly identified predictors.ConclusionsMachine learning approaches are advantageous over multivariable logistic regression models in predicting HIV/STIs diagnosis.     

Factors associated with sexually transmitted infection testing among men who utilize an internet-based men who have sex with men community

Public health messaging encourages men who have sex with men (MSM) to be tested for sexually transmitted infections (STI) and HIV at least yearly, and more frequently depending on sexual behaviors. However, despite engaging in a range of sexual behaviors, many MSM do not participate in regular STI testing. The objective of this study was to understand factors associated with STI testing among a nonclinic-based population of men accessing an Internet-based social and sexual networking site. We asked 25,736 men to complete a comprehensive behavioral and health assessment after being recruited from an Internet site popular among men seeking social or sexual interactions with other men. Analyses were performed using multivariate logistic regression with effects significant at p?相似文献   

Self-reported sexually transmitted infections and their correlates among men who have sex with men in Norway: an Internet-based cross-sectional survey

Background  

The incidences of reportable sexually transmitted infections (STI) among men who have sex with men (MSM) have increased since the late 1990 s in Norway. The objectives of our study were to assess factors, associated with recent selected STI among MSM, living in Norway in order to guide prevention measures.     

Knowledge of human papillomavirus and anal cancer among men who have sex with men attending a New York City sexually transmitted diseases clinic

Men who have sex with men (MSM) are at risk for human papillomavirus (HPV) infection and anal cancer (AC) yet little is known regarding MSM knowledge and risk perception for these outcomes. We surveyed 116 MSM attending a sexually transmitted disease clinic and found that over a quarter (27%) did not know HPV is transmitted via anal sex and most (77%) were unaware of the link with AC. Many MSM (60%) perceived risk for HPV; far fewer (35%) perceived risk for AC. In adjusted logistic regression analyses, having friends or acquaintances with HPV or genital warts was associated with knowledge of anal HPV transmission (odds ratio [OR] = 4.3; 95% confidence interval [CI] = 1.4, 13.4) and AC risk-perception (OR = 6.2; 95% CI = 2.3, 16.7); reporting a regular source of care was associated with awareness of a link between HPV and AC (OR = 3.1; 95% CI = 1.1, 9.1); and MSM and women versus MSM, had less perceived risk for HPV (OR = 0.05; CI = 0.01, 0.29). Nearly all expressed hypothetical acceptance of HPV vaccine. In our sample, many MSM were unaware of a link between MSM sexual practices and HPV-related outcomes.     

Different trends for different sexually transmissible infections despite increased testing of men who have sex with men

Australian and New South Wales Sexually Transmissible Infections Strategies recommend sexual health clinics actively target particular populations, including men who have sex with men (MSM), who have increasing rates of sexually transmitted infections (STIs). We describe trends in MSM attendances, STI testing and diagnostic yield from 1996 to 2007 at a Sydney public sexual clinic. Aggregate data were extracted from the clinic database. There was a 76% increase in the number of individual MSM attending, more than three-fold increase in the number of STI tests performed and the proportion of MSM tested. The increase in testing was greatest for rectal infections. The positive yield increased for rectal chlamydia and infectious syphilis; remained stable for pharyngeal gonorrhoea; and decreased for urethral gonorrhoea, rectal gonorrhoea and urethral chlamydia. Our results demonstrate successful service reorientation in response to a local STI epidemic. Differing trends suggest evolving transmission dynamics for different STIs in the context of increased testing of asymptomatic MSM.     

Sexual health, HIV, and sexually transmitted infections among gay, bisexual, and other men who have sex with men in the United States

The sexual health of gay, bisexual, and other men who have sex with men (MSM) in the United States is not getting better despite considerable social, political and human rights advances. Instead of improving, HIV and sexually transmitted infections (STIs) remain disproportionately high among MSM and have been increasing for almost two decades. The disproportionate and worsening burden of HIV and other STIs among MSM requires an urgent re-assessment of what we have been doing as a nation to reduce these infections, how we have been doing it, and the scale of our efforts. A sexual health approach has the potential to improve our understanding of MSM's sexual behavior and relationships, reduce HIV and STI incidence, and improve the health and well-being of MSM.     

Sexually transmitted infections among women who have sex with women

Women who have sex with women (WSW) are a diverse group with variations in sexual identity, sexual behaviors, sexual practices, and risk behaviors. WSW are at risk of acquiring bacterial, viral, and protozoal sexually transmitted infections (STIs) from current and prior partners, both male and female. Bacterial vaginosis is common among women in general and even more so among women with female partners. WSW should not be presumed to be at low or no risk for STIs based on sexual orientation, and reporting of same-sex behavior by women should not deter providers from considering and performing screening for STIs, including chlamydia, in their clients according to current guidelines. Effective delivery of sexual health services to WSW requires a comprehensive and open discussion of sexual and behavioral risks, beyond sexual identity, between care providers and their female clients.     

Risk factors for HIV infection among men who have sex with men

OBJECTIVES: Risk factors for HIV acquisition were examined in a recent cohort of men who have sex with men (MSM). DESIGN: A longitudinal analysis of 4295 HIV-negative MSM enrolled in a randomized behavioral intervention trial conducted in six US cities. METHODS: MSM were enrolled and assessed for HIV infection and risk behaviors semi-annually, up to 48 months. RESULTS: In multivariate analysis, men reporting four or more male sex partners, unprotected receptive anal intercourse with any HIV serostatus partners and unprotected insertive anal intercourse with HIV-positive partners were at increased risk of HIV infection, as were those reporting amphetamine or heavy alcohol use and alcohol or drug use before sex. Some depression symptoms and occurrence of gonorrhea also were independently associated with HIV infection. The attributable fractions of high number of male partners, use of alcohol or drugs before sex, and unprotected receptive anal intercourse with unknown status partners and the same with presumed negative partners accounted for 32.3, 29.0, 28.4 and 21.6% of infections, respectively. CONCLUSIONS: The challenge is to develop strategies to identify men in need. Interventions are needed to help men reduce their number of sexual partners, occurrences of unprotected anal intercourse, alcohol or drug use before sex and address other mental health issues.     

Peer referral for HIV case-finding among men who have sex with men

OBJECTIVE: To evaluate the effectiveness and cost-effectiveness of a health department-based peer referral program for identifying previously undiagnosed cases of HIV among men who have sex with men (MSM). DESIGN AND METHODS: Between 2002 and 2005, 283 MSM peer recruiters were enrolled in a public health program in King County, Washington, USA. Peer recruiters were enrolled from a sexually transmitted disease (STD) clinic, an HIV clinic, via media advertisements and through collaboration with community-based organizations (CBO). The peer recruiters underwent a brief training and were then paid US$ 20 for each peer they referred to be tested for HIV, STD and viral hepatitis. Peers were paid US$ 20 for being tested. The main outcome measure was the number of new cases of HIV identified and cost per case of HIV identified. RESULTS: Recruiters referred 498 peers for HIV, STD and hepatitis testing. Among 438 peers not previously diagnosed with HIV, 22 (5%) were HIV positive, of whom 18 received their HIV test results. Other infections were variably prevalent among tested peers: gonorrhea [23/307 (8%)], chlamydia [6/285 (2%)], syphilis [1/445 (0.2%)], hepatitis C [61/198 (31%)], surface antigen positive hepatitis B [8/314 (3%)]. Excluding the costs of testing for viral hepatitis and STDs other than HIV, the cost per new HIV case identified was US$ 4929. During the same period, the cost per new case of HIV detected through bathhouse-based HIV testing and through the county's largest CBO-based HIV testing program were US$ 8250 and US$ 11 481, respectively. CONCLUSIONS: Peer referral is an effective means of identifying new cases of HIV among MSM.     

Clinical audit: adherence to sexually transmitted infection screening guidelines for men who have sex with men

Australian guidelines recommend regular screening of men who have sex with men (MSM) for sexually transmitted infections (STIs). This audit was performed to determine STI testing rates in Sydney Sexual Health Centre before and after the development of the guidelines, and to describe characteristics of those not tested. The electronic clinic database and a manual file review were used to determine testing rates and reasons for not testing for the years 2000 and 2002.Overall testing rates were high, with 61% of MSM having had all recommended tests within the past year in 2002. There was a significant increase in testing rates for most tests after the development of the guidelines. Asymptomatic men were more likely to be tested than symptomatic men, and HIV-positive men were less likely to be tested for syphilis.     

A call to action for comprehensive HIV services for men who have sex with men

Where surveillance has been done, it has shown that men (MSM) who have sex with men bear a disproportionate burden of HIV. Yet they continue to be excluded, sometimes systematically, from HIV services because of stigma, discrimination, and criminalisation. This situation must change if global control of the HIV epidemic is to be achieved. On both public health and human rights grounds, expansion of HIV prevention, treatment, and care to MSM is an urgent imperative. Effective combination prevention and treatment approaches are feasible, and culturally competent care can be developed, even in rights-challenged environments. Condom and lubricant access for MSM globally is highly cost effective. Antiretroviral-based prevention, and antiretroviral access for MSM globally, would also be cost effective, but would probably require substantial reductions in drug costs in high-income countries to be feasible. To address HIV in MSM will take continued research, political will, structural reform, community engagement, and strategic planning and programming, but it can and must be done.     

性网络与男男性行为人群的HIV传播

性网络是男男性行为人群(MSM)经性途径传播艾滋病病毒(HIV)的直接通道。网络分析方法可揭示性网络构成与个体感染HIV风险及与群体中HIV传播的动力学关系。为深入探讨MSM HIV传播风险,为预防干预定位提供信息,该文对性网络与MSMHIV传播关系的研究现况做一简要概述。