Sexually Transmitted Infections Prevention Interventions Research Articles

Prevalence and predictors of HIV and sexually transmitted infections among vulnerable women engaged in sex work: Findings from the Kyaterekera Project in Southern Uganda.

Women engaged in sex work (WESW) have an elevated risk of the human immunodeficiency virus (HIV) and sexually transmitted infections (STI). Estimates are three times higher than the general population. Understanding the predictors of HIV and STI among WESW is crucial in developing more focused HIV and STI prevention interventions among this population. The study examined the prevalence and predictors of HIV and STI among WESW in the Southern part of Uganda. Baseline data from the Kyaterekera study involving 542 WESW (ages 18-55) recruited from 19 HIV hotspots in the greater Masaka region in Uganda was utilized. HIV and STI prevalence was estimated using blood and vaginal fluid samples bioassay. Hierarchical regression models were used to determine the predictors of HIV and STI among WESW. Of the total sample, 41% (n = 220) were found to be HIV positive; and 10.5% (n = 57) tested positive for at least one of the three STI (Neisseria gonorrhoeae, Chlamydia trachomatis and Trichomonas vaginalis) regardless of their HIV status. Older age (b = 0.09, 95%CI = 0.06, 0.13, p≤0.001), lower levels of education (b = -0.79, 95%CI = -1.46, -0.11, p≤0.05), fewer numbers of children in the household (b = -0.18, 95%CI = -0.36, -0.01), p≤0.05), location (i.e., fishing village (b = 0.51, 95%CI = 0.16, 0.85, p≤0.01) or small town (b = -0.60, 95%CI = -0.92, -0.28, p≤0.001)), drug use (b = 0.58, 95%CI = 0.076, 1.08, p≤0.05) and financial self-efficacy (b = 0.05, 95%CI = -0.10, 0.00, p≤0.05), were associated with the risk of HIV infections among WESW. Domestic violence attitudes (b = -0.24, 95%CI = -0.42, -0.07, p≤0.01) and financial distress (b = -0.07, 95%CI = -0.14, -0.004, p≤0.05) were associated with the risk of STI infection among WESW. Study findings show a high prevalence of HIV among WESW compared to the general women population. Individual and family level, behavioural and economic factors were associated with increased HIV and STI infection among WESW. Therefore, there is a need for WESW focused HIV and STI risk reduction and economic empowerment interventions to reduce these burdens.

A systematic review of eHealth modes in preventing sexually transmitted infections.

Prevention of sexually transmitted diseases (STDs) is critical. Despite developing treatment and prevention programs, sexually transmitted infections (STIs) are essential in developing acute and chronic diseases. Because "eHealth" (electronic-Health) has excellent potential for disseminating health information to the public regarding STDs, we aimed to identify and review all published articles focusing on preventing STIs. After constructing the design and answering population, intervention, comparison, and outcome questions, two authors conducted a systematic literature search in four online databases in January 2022. The screening process and data extraction were conducted by two authors independently, and then, a quality assessment was performed. After removing duplicates, and two rounds of shortlisting, 16 articles were included for data extraction out of 5113 entries. Included studies were of different designs and assessed six preventive outcomes categories, with condom use being the most frequent result among studies. We also extracted implementation outcomes and reviewed them. Included studies with 13,137 participants have provided reasonable evidence of the effectiveness of different types of eHealth in improving STI prevention interventions. Although this systematic review was not without limitations, it can no longer be ignored that eHealth modes offer many opportunities to prevent STDs, especially among the young population.

Sexually transmitted infections among HIV serodiscordant partners: A secondary analysis of HIV Prevention Trial Network 052.

Sexually transmitted infections (STIs) remain a public health concern because of their interaction(s) with HIV. In the HPTN 052 study, STIs were evaluated in both HIV-positive index cases and their HIV-negative partners at enrollment and at yearly follow-up visits. Our definition for STI was based on any infection with Chlamydia trachomatis, Neisseria gonorrhoeae, syphilis, or Trichomonas vaginalis. We used log-binomial regression models to identify factors associated with prevalent STIs. Generalized estimating equation models with the Poisson distribution were used to compare STI incidence between HIV-positive index cases and HIV-negative partners. 8.1% of the participants had STIs at enrollment. The prevalence of STIs (8.9 vs. 7.2) was higher in HIV-positive index cases than HIV-negative partners. Being female (prevalence ratio (PR) = 1.61; 95% CI: 1.20-2.16) or unmarried (PR = 1.92; 95% CI: 1.17-3.14) was associated with prevalent STIs. Compared to HIV-negative male partners, HIV-positive female index cases had a higher risk of STI acquisition (incidence rate ratio (IRR) = 2.25; 95% CI: 1.70-2.97). While we are implementing HIV prevention interventions for HIV-negative people, we should also intensify targeted STI prevention interventions, especially among HIV-positive women.

The Estimated Direct Lifetime Medical Costs of Sexually Transmitted Infections Acquired in the United States in 2018.

We estimated the lifetime medical costs attributable to sexually transmitted infections (STIs) acquired in 2018, including sexually acquired human immunodeficiency virus (HIV). We estimated the lifetime medical costs of infections acquired in 2018 in the United States for 8 STIs: chlamydia, gonorrhea, trichomoniasis, syphilis, genital herpes, human papillomavirus (HPV), hepatitis B, and HIV. We limited our analysis to lifetime medical costs incurred for treatment of STIs and for treatment of related sequelae; we did not include other costs, such as STI prevention. For each STI, except HPV, we calculated the lifetime medical cost by multiplying the estimated number of incident infections in 2018 by the estimated lifetime cost per infection. For HPV, we calculated the lifetime cost based on the projected lifetime incidence of health outcomes attributed to HPV infections acquired in 2018. Future costs were discounted at 3% annually. Incident STIs in 2018 imposed an estimated $15.9 billion (25th-75th percentile: $14.9-16.9 billion) in discounted, lifetime direct medical costs (2019 US dollars). Most of this cost was due to sexually acquired HIV ($13.7 billion) and HPV ($0.8 billion). STIs in women accounted for about one fourth of the cost of incident STIs when including HIV, but about three fourths when excluding HIV. STIs among 15- to 24-year-olds accounted for $4.2 billion (26%) of the cost of incident STIs. Incident STIs continue to impose a considerable lifetime medical cost burden in the United States. These results can inform health economic analyses to promote the use of cost-effective STI prevention interventions to reduce this burden.

Harnessing "Scale-Up and Spread" to Support Community Uptake of the HoMBReS por un Cambio Intervention for Spanish-Speaking Men: Implementation Science Lessons Learned by a CBPR Partnership.

Latinx men in the southern United States are affected disproportionately by HIV and other sexually transmitted infections (STIs). However, few evidence-based prevention interventions exist to promote health equity within this population. Developed by a well-established community-based participatory research partnership, the HoMBReS por un Cambio intervention decreases sexual risk among Spanish-speaking, predominately heterosexual Latinx men who are members of recreational soccer teams in the United States. Scale-up and spread, an implementation science framework, was used to study the implementation of this evidence-based community-level intervention within three community organizations that represent typical community-based providers of HIV and STI prevention interventions (i.e., an AIDS service organization, a Latinx-serving organization, and a county public health department). Archival and interview data were analyzed, and 24 themes emerged that mapped onto the 12 scale-up and spread constructs. Themes included the importance of strong and attentive leadership, problem-solving challenges early, an established relationship between innovation developers and implementers, organizational capacity able to effectively work with men, trust building, timelines and incremental deadlines, clear and simple guidance regarding all aspects of implementation, appreciating the context (e.g., immigration-related rhetoric, policies, and actions), recognizing men’s competing priorities, and delineated supervision responsibilities. Scale-up and spread was a useful framework to understand multisite implementation of a sexual risk reduction intervention for Spanish-speaking, predominately heterosexual Latinx men. Further research is needed to identify how constructs, like those within scale-up and spread, affect the process across the implementation continuum, given that the uptake and implementation of an innovation is a process, not an event.

Uptake and Impact of Short Message Service Reminders via Sexually Transmitted Infection Partner Services on Human Immunodeficiency Virus/Sexually Transmitted Infection Testing Frequency Among Men Who Have Sex With Men.

Sexually transmitted infection (STI) partner services (PS) allow provision of human immunodeficiency virus (HIV)/STI prevention interventions to high-risk individuals, including testing reminders via short message service (SMS). In King County, Washington, PS attempt to reach all men who have sex with men (MSM) with early syphilis and those with gonorrhea or chlamydia as resources allow. Since 2013, PS offered quarterly SMS testing reminders. We evaluated correlates of reminder uptake and the association between reminder uptake and postinterview asymptomatic STI diagnosis using Poisson regression, and the association between preinterview SMS reminder use and intertest interval among HIV-negative MSM using median regression. During July 1, 2013 to January 17, 2018, 8236 MSM were reported with 1 or more STI diagnoses and 5237 received PS interviews. Of these, 4087 (78%) were offered SMS reminders; 545 (13%) accepted, 265 (7%) were already receiving SMS, 3277 (80%) refused. Of 2602 patients who refused and were asked about other reminders, 37% used none, 16% received reminders from medical providers, 20% tested at routine physicals, and 26% used other reminders. SMS reminder use before and after PS interview was associated with negative HIV status, younger age, and diagnosis with gonorrhea or chlamydia (vs. syphilis) (P < 0.05 for all). Preinterview intertest interval was longer among MSM testing at physicals (9.6 months) than those using no reminder (5.6), SMS reminders (4.7, P < 0.05 vs. physicals), and non-SMS reminders (3.6, P < 0.001 vs. SMS). Reminder uptake was not associated with postinterview STI diagnosis. Offering SMS reminders through STI PS is feasible. Uptake was low, but higher among young MSM not on preexposure prophylaxis. The SMS reminders may increase testing frequency.

Sexual behaviour and incidence of HIV and sexually transmitted infections among men who have sex with men using daily and event-driven pre-exposure prophylaxis in AMPrEP: 2 year results from a demonstration study

Pre-exposure prophylaxis (PrEP) for HIV might induce risk compensation, defined as increased sexual risk behaviour leading to increased incidence of bacterial sexually transmitted infections (STIs). We examined the incidence of HIV, STIs, and sexual behaviour after initiating daily and event-driven PrEP. AMPrEP is a demonstration study that assessed the incidence of HIV and bacterial STIs and sexual behaviour among PrEP users at the STI clinic of the Public Health Service of Amsterdam (Amsterdam, the Netherlands). Eligible adults (aged ≥18 years) were HIV-negative men who have sex with men (MSM) and transgender people who had reported one or more of the following in the previous 6 months: condomless anal sex with casual partners, at least one bacterial STI, use of post-exposure prophylaxis after a sexual risk incident, or an HIV-positive sexual partner with detectable viral load. Participants were given a choice of daily PrEP or event-driven PrEP regimens. Participants were seen every 3 months for HIV and STI testing. Participants also completed self-administered questionnaires about sexual behaviour at each visit. Over the first 2 years, we assessed the number and incidence rate of HIV and chlamydia, gonorrhoea, and syphilis, including STIs diagnosed in between study visits and assessed changes in incidence over time using piecewise exponential survival models. The number of sexual acts and sexual partners were also analysed and changes over time were assessed using negative binomial regression models. This study is ongoing; the data cutoff for this analysis was June 30, 2018. Between Aug 3, 2015, and May 31, 2016, 376 participants were recruited, of whom nine participants were lost to follow-up, thus 367 participants were included in the analysis. Overall, 365 MSM and two transgender women were included, contributing 681·7 person-years of follow-up. At enrolment, 269 (73%) of 367 participants chose daily PrEP and 98 (27%) participants chose event-driven PrEP. Two individuals in the daily PrEP group became HIV-positive; overall HIV incidence rate was 0·30 per 100 person-years (95% CI 0·07-1·19). 253 participants were diagnosed with one or more STI during the first 2 years (incidence rate 90·4 per 100 person-years). STI incidence did not change over time (adjusted incidence rate ratio [aIRR] 1·00 per 3 month follow-up, 95% CI 0·93-1·07). More than a quarter of all STIs were diagnosed from tests done in between study visits. STI incidence was lower in the event-driven PrEP group than the daily PrEP group (aIRR 0·59, 95% CI 0·46-0·75). The number of condomless anal sex acts with casual partners per 3 months increased, but the number of partners and sex acts remained stable. Although the overall incidence of STIs did not change during 2 years of PrEP use, the incidence of STIs was higher among participants using daily PrEP than those using event-driven PrEP, which is likely a result of differences in sexual behaviour. This finding suggests the need to tailor STI prevention interventions according to behavioural profiles. ZonMw, H-TEAM, Internal GGD research funds, Aidsfonds, Stichting AmsterdamDiner Foundation, Gilead Sciences, Janssen Pharmaceutica, M A C AIDS Fund, and ViiV Healthcare.

Health implications of sex trading characteristics in Long Beach, California, USA.

This study examined the comparative health risk behaviors of women who (a) traded sex for money, (b) traded sex for drugs, (c) traded sex for both drugs and money, or (d) did not trade sex. Self-report data were collected from 2369 women who received services through HIV and sexually transmitted infection (STI) testing programs and a subset were tested for HIV, hepatitis B, hepatitis C, and syphilis. Results revealed those women who traded sex only for money used condoms, were tested for HIV, and received the HIV test results more often than the other women. Women who traded sex for both drugs and money reported a significantly higher prevalence of gonorrhea, hepatitis B, and syphilis; were more likely to test positive for hepatitis B, syphilis, and HIV; engaged more often in sex acts without condoms; and were incarcerated for significantly more days. Based on these findings, the targets with greatest potential for STI prevention interventions are female sex workers who trade sex for both drugs and money.

Effectiveness of a Couple-Based HIV and Sexually Transmitted Infection Prevention Intervention for Men in Community Supervision Programs and Their Female Sexual Partners

In the United States, the prevalence rates of HIV and sexually transmitted infections (STIs) are higher among individuals in community supervision programs (CSPs) than in the general population. However, to date, no couple-based HIV or STI prevention interventions have been implemented for the large number of men in CSPs. To determine the effectiveness of a 5-session couple-based prevention intervention, compared with a 1-session counseling, testing, and referral (CTR) program, in reducing HIV and STIs as well as condomless intercourse among men in CSPs and their female sexual partners. A randomized clinical trial was conducted from July 11, 2013 (first recruitment), through May 17, 2016 (last randomization). Participants were drug-involved men mandated to a CSP and their female sexual partners (n = 230 couples or 460 individuals). Participants were recruited from various CSP sites in New York, New York, and randomized into either the PACT (Protect and Connect) intervention condition or the HIV CTR control condition (n = 115 couples or 230 individuals in each arm). Analysis of behavioral outcomes used an intent-to-treat approach. Statistical analyses were conducted from November 1, 2017, through June 1, 2018. Self-reported data on sexual behaviors in the past 90 days were used to assess behavioral outcomes at all time points. Biomarkers were collected at baseline and 12 months, and behavioral outcomes were collected at baseline and 3, 6, and 12 months. A total of 230 couples (460 individuals) were included. The mean (SD) age of participants was 35.0 (12.8) years, and most participants (341 [74.1%]) self-identified as black or African American race/ethnicity. Of the 18 new cases of STIs identified at the 12-month assessment, 10 came from the PACT arm and 8 from the HIV CTR control arm. Compared with the control participants, PACT participants had 33% fewer acts of condomless vaginal and/or anal intercourse with their main partner (incidence rate ratio [IRR], 0.67; 95% CI, 0.45-0.99; P = .04), 70% fewer acts with other partners (IRR, 0.30; 95% CI, 0.12-0.74; P = .009), and 40% fewer acts with all sexual partners (IRR, 0.60; 95% CI, 0.42-0.85; P = .005) over the entire follow-up period. In addition, PACT participants were less likely to report being under the influence of drugs or alcohol the last time they had vaginal and/or anal intercourse with their study partners (odds ratio, 0.55; 95% CI, 0.31-0.96; P = .04) and had 26% fewer sexual partners in the past 90 days (IRR, 0.74; 95% CI, 0.61-0.88; P = .001). At 12 months, HIV and STI incidence did not differ significantly between the 2 arms. The PACT intervention appeared to reduce risky sexual behaviors, such as condomless intercourse; this finding suggests that a couple-based HIV and STI prevention intervention program may curb the burgeoning HIV epidemic in CSPs. ClinicalTrials.gov identifier: NCT01690494.

Why we need pre-exposure prophylaxis: incident HIV and syphilis among men, and transgender women, who have sex with men, Bangkok, Thailand, 2005-2015.

We describe incident human immunodeficiency virus (HIV) and syphilis trends in men who have sex with men (MSM) and transgender women (TGW) presenting for HIV voluntary counseling and testing (VCT) services and sexually transmitted infection (STI) management at the Silom Community Clinic, Bangkok, Thailand. Clients underwent rapid HIV testing and syphilis rapid plasma reagin (RPR) testing. For incidence analysis, we included clients with >1 follow-up visit. Initial negative HIV with subsequent positive HIV defined incident HIV infection; incident syphilis infection was defined as negative RPR followed by positive RPR (titer ≥1:8) and confirmatory anti- Treponema pallidum antibodies. Calculation of incidence using Poisson regression assumed a uniform probability distribution throughout the seroconversion interval. From 15 September 2005 to 31 December 2015, we tested 10,158 clients for HIV and 10,324 for syphilis. Overall, 7109 clients tested HIV-seronegative and contributed 7157 person-years (PY). Three-hundred forty-seven incident HIV infections resulted in an incidence rate of 4.8 per 100 PY (95% confidence interval [CI] 4.4-5.4). We found an inverted U-shape trend of HIV incidence over time with a peak of 6.4 per 100 PY in quarter 2/2011 ( p < 0.01) (Poisson with RCS function, p = 0.001). Overall, 8713 clients tested seronegative for syphilis and contributed 8623 PY. The incidence of syphilis infection was 4.4 per 100 PY (95% CI 3.9-4.8). Despite an apparent decline in HIV incidence among MSM and TGW attending VCT services, syphilis incidence rose and remained high. Evaluating temporal trends of HIV and syphilis incidence provides an opportunity to evaluate epidemic trajectories and target limited program funding. We recommend focused HIV and STI prevention interventions for MSM in Bangkok.

Prevalence and correlates of condom use among single midlife Canadian women and men aged 40 to 59

Reported rates of sexually transmitted infections (STIs) among midlife Canadians have increased. However, there is little data on the STI behavioural risk of this age group. The current study investigated the prevalence and correlates of condom use at last penile vaginal intercourse (PVI) among sexually active single (never married, separated/divorced) Canadians aged 40 to 59 (n=830). Men were more likely than women to report using a condom at last PVI (35.3% vs. 27.6%). Number of partners, dating status, partner type at last sex, and concern about STI were significant bivariate predictors of condom use among men and women. Age, marital status, and erectile difficulties were additional bivariate predictors for men. In multivariate analysis, marital status, number of partners, and partner type predicted condom among men. Divorced and separated men were 53% less likely to use a condom than single, never married men. Men who reported 2 or more partners over the past year were almost 2 times more likely to use a condom than men who had one partner over the past year. As partner type at last sex moved from casual to more committed, men were 26% less likely to report condom use at last PVI. Among women, partner type at last sex was the only significant multivariate predictor of condom use, as partner type moved from casual to more committed, condom use was 33% less likely. Condom use was not associated with decreased pleasure during PVI. Educational STI prevention interventions targeting single midlife Canadians are needed.

Self-Esteem and Risky Behaviors Among Residents of a Tanzanian Sugar Plantation: A Brief Report

ABSTRACTRisky behaviors can increase acquisition risk of HIV and other sexually transmitted infections (STI). Self-esteem may be linked to risky behavior, but little research has assessed this relationship in low-resource regions. Using cross-sectional data from a study of Tanzanian plantation residents, the authors examined associations between self-esteem and two risky behaviors (problematic alcohol use and transactional sex). In unadjusted and adjusted analyses, higher self-esteem was significantly associated with less prevalent transactional sex (adjusted prevalence ratio [aPR]: 0.74, 95% confidence interval [CI]: 0.59–0.93) and less prevalent problematic alcohol use (aPR: 0.81, 95% CI:0.70–0.93). Self-esteem may be an appropriate target for STI prevention interventions.

LifeSkills for Men (LS4M): Pilot Evaluation of a Gender-Affirmative HIV and STI Prevention Intervention for Young Adult Transgender Men Who Have Sex with Men.

Young adult transgender men who have sex with men (TMSM) engage in sexual behaviors that place them at risk of sexually transmitted infections (STIs) including HIV. To date, no HIV and STI prevention interventions have been developed specifically for young adult TMSM. To address this gap, the current study aimed to (1) adapt a small group-based behavioral HIV prevention intervention designed for young transgender women ("LifeSkills") to address the unique HIV and STI prevention needs of young TMSM ages 18-29 years and (2) conduct a pilot evaluation of the intervention ("LifeSkills for Men"; LS4M). LS4M was carried out in an iterative approach with community input along the way, which allowed for refinement of the intervention manual and enhanced participant acceptability. A LS4M Task Force was convened to guide intervention development/adaptation and study implementation. Initially, focus groups were conducted to examine the sexual health needs, concerns, and stressors facing young TMSM (n = 12; mean age = 23.8 years; 16.7% people of color). Next, LS4M was pilot tested (n = 17; mean age = 24.3 years; 23.5% people of color) to assess acceptability with the study population and feasibility of all study procedures. Overall attendance, participation rates, and positive feedback from participants demonstrate that LS4M is highly acceptable and feasible to carry out with young TMSM. Trends in outcome measures across 4 months of follow-up suggest that participation in the intervention may improve mental health, reduce internalized stigma, and reduce HIV- and STI-related risk behaviors. Further testing of the intervention enrolling young TMSM with recent sexual risk behavior at baseline and with a control group is warranted. Lessons learned for future work with young TMSM are discussed.

Pilot testing an internet-based STI and HIV prevention intervention with Chilean women.

The incidence of sexually transmitted infections (STIs) and human immunodeficiency virus (HIV) is high among young Chilean women, and there are no STI or HIV prevention interventions available to them that incorporate technology. The purpose of this study was to investigate the preliminary efficacy of an Internet-based STI and HIV prevention intervention (I-STIPI) for Chilean young women on measures of STI- and HIV-related information, motivation, behavioral skills, and preventive behaviors. This is a pretest-posttest study. Forty young Chilean women between 18 and 24 years of age participated in an investigation of the I-STIPI's preliminary efficacy on STI and HIV prevention-related outcomes between baseline and a postintervention assessment. The intervention consisted of four online modules. Data collection was conducted in Santiago, Chile. Paired-samples t test analysis was used to determine whether there were significant differences in each of the outcome variables. After receiving I-STIPI, women reported a significant increase in levels of STI- and HIV-related knowledge, attitudes toward the use of condoms and perceived self-efficacy, and a reduction of risky sexual behaviors with uncommitted partners. The I-STIPI showed promise as an Internet-based intervention that can reduce barriers to accessing preventive interventions and increase STI and HIV preventive behaviors in young Chilean women. The study provided important information about the ability of an Internet-based intervention to reduce young women's risk factors and to provide positive preliminary efficacy on STI- and HIV-related outcomes. Internet-based interventions can eliminate many barriers to receiving prevention interventions and may prove to be cost effective.

Socioeconomic-Related Risk and Sexually Transmitted Infection Among African-American Adolescent Females

PurposeVirtually no studies have examined the potential role that chronic stress, particularly the stress associated with socioeconomic status (SES) strain, may play on sexually transmitted infection (STI) risk. This study examined the association between SES-related risk at baseline to STI acquisition and reinfection over 36 months of follow-up. MethodsSix hundred twenty-seven African-American female adolescents, ages 14–20 years, recruited from sexual health clinics in Atlanta, GA, participated in a randomized controlled HIV prevention trial and returned for at least one follow-up assessment. Following baseline assessment, six waves of data collection occurred prospectively over 36 months. Chronic SES-related risk was assessed as a sum of yes–no exposure to seven risk indicators. Laboratory-confirmed tests for Chlamydia trachomatis and Neisseria gonorrhoeae were performed at each follow-up. ResultsIn multivariable regression analysis, SES-related risk significantly predicted STI acquisition over 36 months (adjusted odds ratio = 1.22) and STI reinfection (adjusted odds ratio = 1.16) above and beyond other known correlates of STI. ConclusionsFindings demonstrate that SES-related risk was predictive of both STI acquisition and reinfection among young African-American females. They are consistent with propositions that some health disparities observed in adulthood may be linked to earlier chronically stress-inducing life experiences, particularly experiences associated with low SES conditions. Although various explanations exist for the observed connection between SES-related risk and subsequent STI acquisition and/or reinfection across 36 months of follow-up, these findings highlight the need for further research to elucidate the exact pathway(s) by which SES-related risk influences later STI acquisition to refine STI prevention interventions for this population.

Assessing base rates of sexual behavior using the unmatched count technique

Estimating the prevalence of sexual behaviors is difficult because of self-report biases. This is particularly relevant in assessing high-risk sexual behaviors for the purpose of reducing the transmission and acquisition of sexually transmitted infections (STIs) and HIV/AIDS. The present study employed the unmatched count technique (UCT), which provides estimates of the prevalence of risky sexual behaviors without requiring participants to confess to socially undesirable or stigmatized behaviors. Compared to a standard, anonymous self-report questionnaire, the UCT protocol revealed that people were less likely to notify their partners about STIs or discuss their history of sexual experiences. Effects were particularly large in women suggesting that women may be more likely to misrepresent their sexual behaviors. The findings suggest that conventional, anonymous self-report questionnaire data of base rates of risky sexual behavior and sexual communication are consistently inaccurate. These discrepant base rates suggest that the UCT might provide a better estimate of the frequency of these behaviors. Results suggest that inconsistent sexual behavior is more rampant than anonymous questionnaires suggest. They also underscore the need for improvements in the anonymity of assessment of sexual behaviors, which could in turn improve the targeting of prevention efforts. Results have important public health implications because accurate assessment of sexual behaviors is crucial for developing effective STI prevention interventions among target populations.

Dual contraceptive use among adolescents and young adults: correlates and implications for condom use and sexually transmitted infection outcomes

BackgroundSimultaneous condom and hormonal contraception usage (‘dual method use’) maximises protection against pregnancy and sexually transmitted infection (STI), although there is concern that promotion of this strategy could result in...

S15.2 Social Networking and Diffusion of Risks and Interventions Among Youth

Use of online social networking technologies has been growing rapidly, especially among groups at risk for sexually transmitted infections (STIs), such as men who have sex with men (MSM), homeless...

P3.409* Sexual health in the Adult Film Industry (AFI): Environmental Barriers and Facilitators of Sexually Transmitted Infection (STI) Transmission

BackgroundAdult film is a legal form of sex work in the U.S. that places performers at heightened risk of acquiring an STI. However, very little public health research exists on...

Improving the Validity of Self-Reported Sexual Behavior

Improving the Validity of Self-Reported Sexual Behavior