Study Design and Sample
This is a secondary analysis of data obtained during a NIDA-funded clinical trial of a social network-based behavioral preventive intervention for GBMSM individuals at elevated risk for HIV in Kazakhstan (ClinicalTrials.gov: NCT02786615). The parent study sought to enroll a sample of GBMSM individuals in the Kazakhstan cities of Almaty, Astana, and Shymkent. The procedures for sampling, recruitment, and obtaining informed consent are described in detail in prior publications [7, 9]. The eligibility criteria for participation in the trial included (1) being assigned male at birth or identifying as a man at any point in life, (2) residing in one of the three study cities, (3) being 18 years of age or older, (4) reporting one or more incidents of consensual sex with a man in the past 12 months, and (5) reporting one or more incidents of binge drinking, illicit drug use, or both in the past 90 days [10]. Between August 2018 and March 2022, 629 participants who met these eligibility criteria completed a structured interview and 557 completed biological testing for HIV, syphilis, gonorrhea, and chlamydia.
The current analyses focus on the cases for which respondents (1) completed the HIV assay and (2) reported a current gender identity that does not match their sex assigned at birth (i.e., TGE individuals). Aside from current gender identity, there were no significant sociodemographic differences in any of the reported measures between this sample of TGE individuals and the remaining sample in the parent study who identify as cis MSM and completed the study’s HIV testing protocol (n = 557). The final sample size for this analysis was 68. All protocols and materials used in the trial were reviewed and approved by the Institutional Review Boards of Columbia University and Al-Farabi Kazakh National University School of Public Health.
Measures and Study Variables
HIV testing history
HIV testing history was assessed using items adapted from the HIV/HCV Testing Domains Measure questionnaire [11]. Participants were first asked whether they had ever received an HIV test (yes, no). If reporting any prior test, participants were asked about the length of time since their most recent test was performed sand were specifically instructed to consider HIV testing other than that provided by the study. Responses were then coded for ever having received an HIV test and having received an HIV test in the past 6 months.
HIV and STI statuses
HIV status was assessed through self-reports and biological assays. Participants self-reported their current HIV status as negative, positive, or unknown. For each biological assay (for HIV and STIs), staff provided pretest counseling, testing, and posttest counseling. For HIV testing, trained clinical staff administered an oral rapid test using OraQuick ADVANCE [12]. Additionally, confirmatory testing using blood Western blot (a second-step diagnostic tool) was performed by the participant’s city-run ‘AIDS Center’ and was provided to all participants receiving reactive rapid test results. When testing for gonorrhea and chlamydia, staff collected urine and rectal samples to be tested by local laboratories in each study city using AmpliSens (a nucleic acid amplification test with 99.9% sensitivity and specificity) [13]. To test for syphilis, staff conducted a rapid blood test using Alere Determine Syphilis TP with a capillary blood sample collected via a finger prick [14]. Reactive rapid tests were followed by confirmatory testing in Dermato-Venereological Dispensaries using a nontreponemal test (test for Venereal Diseases Research Laboratory [VDRL] or, in VDRL absence, a Wasserman reaction) and a treponemal test (Treponema pallidum hemagglutination assay particle agglutination [TPHA]). All the selected laboratories were certified by the Kazakhstan Ministry of Health for STI testing. For any detected and confirmed HIV infections or STIs, the study provided supportive referral for treatment (e.g., assisted with making appointments for medical care, offered accompanying participants for treatment appointments, etc.).
Sociodemographic and background characteristics
Participants self-reported their current residence (Almaty, Astana, Shymkent), gender identity (female/woman, male/man, other, followed by response to ‘please specify’), age (in years), preferred language of survey completion (Russian, Kazakh), legal marital status (single/never married, married, no longer with spouse, other), education completion status (less than high school, high school to some college, baccalaureate or higher degree), current employment status (working full-time, working part-time, student, unemployed), and monthly income (in Kazakh Tenge). Additionally, participants self-reported their lifetime and recent (e.g., past 90 days) incidents of binge drinking, illicit use of drugs, or both [8, 15].
Statistical Analyses
All statistical analyses were conducted using SPSS Version 28.0 [16]. One way ANOVA or Fisher-Freeman-Halton Exact Tests (due to small cell sizes) were used to assess the significance of differences in participant sociodemographics, background characteristics, and HIV and STI indicators by city of residence.