Self-reported condom use is associated with reduced risk of chlamydia, gonorrhea, and trichomoniasis

Prevalence of sexually transmitted infections (STIs), associations with sociodemographic and behavioural factors, and assessment of the syndromic management of vaginal discharge in women with urogenital complaints in Mozambique

In Mozambique, sexually transmitted infections (STIs) are estimated to be prevalent, but diagnosis and treatment of curable STIs rely only on syndromic management. We examined the prevalence of four non-viral STIs and HIV-1/2, based on etiological diagnosis, associations with sociodemographic and behavioural factors, and the STI diagnostic accuracy of the vaginal discharge syndromic management in women with urogenital complaints in Maputo, Mozambique. A cross-sectional study was performed in Maputo, Mozambique, February 2018-January 2019, enrolling 924 women of reproductive age with urogenital complaints. Endocervical/vaginal swabs were sampled and chlamydia, gonorrhoea, trichomoniasis and Mycoplasma genitalium infections were diagnosed using a multiplex real-time PCR (AmpliSens; InterLabServices). Serological testing was performed for HIV-1/2. A structured questionnaire collected metadata. All data were analyzed in STATA/IC 12.1 using descriptive statistics, chi-square tests and logistic regression model. About 40% of the women were less than 24 years old, 50.8% were single, 62.1% had their sexual debut between 12 and 17 years of age, and the main complaint was vaginal discharge syndrome (85%). The prevalence of chlamydia was 15.5%, trichomoniasis 12.1%, gonorrhoea 4.0%, M. genitalium 2.1%, and HIV-1/2 22.3%. The vaginal discharge syndrome flowchart had a sensitivity of 73.0%-82.5% and a specificity of 14%-15% for the detection of any individual non-viral STI in women with urogenital complaints. In total, 19.2% of the symptomatic women with chlamydia, trichomoniasis or gonorrhoea would not be detected and accordingly treated using the vaginal discharge syndromic management (missed treatment) and 70.0% of the women would be treated despite not being infected with any of these three STIs (overtreatment). In conclusion, a high prevalence of especially chlamydia, trichomoniasis, and HIV-1/2 was found in women of childbearing age with urogenital complaints in Maputo, Mozambique. Syndromic management of vaginal discharge revealed low accuracy in the detection of STIs in symptomatic women, especially low specificity, which resulted in under-treatment of STI-positive cases and incorrect or over-treatment of women with urogenital complaints, many of whom were negative for all the non-viral STIs. Etiological diagnosis is imperative for effective management of STIs in symptomatic and asymptomatic women.

PSYCHOPATHY AND RISKY SEXUAL BEHAVIOR IN INCARCERATED WOMEN

To date, very few studies have explored the association between psychopathic traits and risky sexual behavior (RSB) among women. Here, we investigated this relationship in a sample of 137 incarcerated women. Psychopathic traits were assessed via the Hare Psychopathy Checklist-Revised (PCL-R) and lifetime RSB measures, including number of lifetime sexual partners, frequency of engaging in sexual intercourse while intoxicated, and frequency of forgoing protection (e.g., condom usage) during sexual intercourse, were assessed through self-report. PCL-R Facet 3 scores (assessing lifestyle psychopathic traits) were associated with an increased frequency of engaging in sexual intercourse while intoxicated. In addition, women scoring high on the PCL-R were more likely to engage in sexual intercourse while intoxicated compared with a previously collected sample of men scoring high on the PCL-R. The results obtained in the current study help improve our understanding of the association between psychopathic traits and RSB among women.

Trends in Condomless Sex Among MSM Who Participated in CDC-Funded HIV Risk-Reduction Interventions in the United States, 2012-2017

Consistent and correct use of condoms can reduce the risk for sexually transmitted diseases, including HIV/AIDS. Studies have reported that condomless sex among men who have sex with men (MSM) has steadily increased in recent years. We analyzed data reported by 51 health departments regarding 82 556 HIV-positive and HIV-negative MSM 13 years or older and participated in Centers for Disease Control and Prevention-funded behavioral risk-reduction intervention programs during 2012-2017. The percentages of condomless sex increased from 56.3% to 72.0% (estimated annual percent change [EAPC] = 7.1%) among HIV-positive MSM and from 46.0% to 70.5% (EAPC = 4.1%) among HIV-negative MSM. Continued increases in condomless sex might disrupt progress in ending the HIV/AIDS epidemic. Transmission risk associated with condomless sex can be reduced by ensuring that HIV-positive persons know their status early and are linked to care to achieve viral suppression and those at risk for acquiring HIV/AIDS can readily access preexposure prophylaxis.

Sexual Arousal Discounting: Devaluing Condom-Protected Sex as a Function of Reduced Arousal

Sexual discounting is a growing area of research aimed at identifying factors that reduce people's reported willingness to have safe sex. One commonly reported reason for condom non-use is that a condom reduces sexual arousal. However, researchers have yet to isolate the specific role of sexual arousal using a sexual discounting framework. We extended past research by measuring how sexual arousal reduced people's willingness to have condom-protected sex ("sexual arousal discounting": SAD). College students (n = 379; 67.5% females) selected partners they most wanted and least wanted to have sex with and were randomized to one of two groups. In one group, participants rated their willingness to have sex with a condom if their own arousal decreased (from 100 to 10%) from condom use. The other group completed the same task except their partner's arousal decreased from condom use instead of their own. We observed a three-way interaction between arousal levels, most versus least desirable partners, and self versus partner groups. Participants' willingness to have condom-protected sex systematically reduced as a function of sexual arousal. This was observed more with the most (vs. least) desirable partner and in the self-arousal (vs. partner-arousal) group but only when the partner was their least desirable. Men (vs. women) displayed more arousal discounting but only with the most desirable partner. Finally, higher arousal discounting was associated with lower safe-sex self-efficacy and higher reported frequency of unprotected sex in the past 3 months. This study demonstrates how reduced sexual arousal from condom use can be measured as a factor influencing sexual risk-taking.

Inference of Naturally Acquired Immunity Using a Self-matched Negative-Control Design

Host adaptive immune responses may protect against infection or disease when a pathogen is repeatedly encountered. The hazard ratio of infection or disease, given previous infection, is typically sought to estimate the strength of protective immunity. However, variation in individual exposure or susceptibility to infection may introduce frailty bias, whereby a tendency for infections to recur among individuals with greater risk confounds the causal association between previous infection and susceptibility. We introduce a self-matched "case-only" inference method to control for unmeasured individual heterogeneity, making use of negative-control endpoints not attributable to the pathogen of interest. To control for confounding, this method compares event times for endpoints due to the pathogen of interest and negative-control endpoints during counterfactual risk periods, defined according to individuals' infection history. We derive a standard Mantel-Haenszel (matched) odds ratio conveying the effect of prior infection on time to recurrence. We compare performance of this approach to several proportional hazards modeling frameworks and estimate statistical power of the proposed strategy under various conditions. In an example application, we use the proposed method to reestimate naturally acquired protection against rotavirus gastroenteritis using data from previously published cohort studies. This self-matched negative-control design may present a flexible alternative to existing approaches for analyzing naturally acquired immunity, as well as other exposures affecting the distribution of recurrent event times.

Barrier Protection Use by Adolescents During Sexual Activity

Rates of sexual activity, pregnancies, and births among adolescents have continued to decline during the past decade to historic lows. Despite these positive trends, many adolescents remain at risk for unintended pregnancy and sexually transmitted infections (STIs). This technical report discusses the new data and trends in adolescent sexual behavior and barrier protection use. Since 2017, STI rates have increased and use of barrier methods, specifically external condom use, has declined among adolescents and young adults. Interventions that increase availability of or accessibility to barrier methods are most efficacious when combined with additional individual, small-group, or community-level activities that include messages about safer sex. Continued research informs public health interventions for adolescents that increase the consistent and correct use of barrier methods and promote dual protection of barrier methods for STI prevention together with other effective methods of contraception.

Condom use in penile-vaginal intercourse among Canadian adults: Results from the sex in Canada survey

PURPOSE

This paper examines condom use in penile-vaginal sexual intercourse among adults in Canada.

DATA AND METHOD

The Sex in Canada survey is a national survey of Canadian adults, ages 18+ (N = 2,303). The online survey used quota-based population sample matching of 2016 census targets for gender, age, region, language, visible minority status, and education level. We report general patterns of self-reported condom use, as well as results from zero-inflated negative binomial regression models on the relationship between condom use and social location, relationship status, and sexual health.

RESULTS

Condom use varies by gender, age, education, visible minority status, and relationship status. Use of condoms is related to the perception of risk of being diagnosed with a sexually transmitted infection in the next six months and to the experience of receiving lessons in condom use. No significant associations were found between condom use and region, rural/urban residence, income, or religion. Among men, but not women, condom use is associated with language preference, past diagnosis with a sexually transmitted infection, and self-reported sexual health.

CONCLUSION

Canadian adults report using a condom in approximately 30% of their sexual encounters involving penile-vaginal sex. Condom use is highest among young adults. Single people use condoms more often than people with marital or common-law partners. Condom use is higher among those with higher levels of education, among people belonging to visible minorities relative to white people, and for men relative to women. People who think they are likely to be diagnosed with a sexually transmitted infection in the next six months are more likely to use condoms than those who do not.

Gendered powerlessness in at-risk adolescent and young women: an empirical model

In the United States, youth aged 13-24 comprised approximately 21% of new HIV infections in 2017; 13% of these infections occurred among women, the majority of whom (86%) acquired HIV through heterosexual contact (Centers for Disease Control and Prevention. 2019a. HIV and youth. Retrieved from https://www.cdc.gov/hiv/group/age/youth/index.html, Centers for Disease Control and Prevention. 2019b. HIV among women. Retrieved from https://www.cdc.gov/hiv/group/gender/women/index.html). We fit and validated a developmentally appropriate empirical model of Connell's Theory of Gender and Power (Connell, R. W. 1987. Gender and power: Society, the person and sexual politics. Stanford, CA: Stanford University Press, Connell, R. W. 2013. Gender and power: Society, the person and sexual politics. Hoboken, NJ: John Wiley & Sons) in a sample of young women and assessed whether gendered powerlessness reflected a multidimensional higher-order latent factor, as the theory implies. Anonymous computer-assisted interviews were administered to at-risk, sexually active young women (N = 1,101). Factor analyses and structural equation modeling were used to determine the dimensionality of gendered powerlessness. Associations with condom use were examined to validate the model. We fit a three-component model of gendered powerlessness, but not a higher-order latent factor. We observed that high scores on two dimensions of gendered powerlessness - cathexis and sexual division of power - were associated with lower likelihood of condom use. Our three-component model helps elucidate the role that components of gendered powerlessness play in young women's health behaviors and underscores the need for measures tailored to young women at high risk of contracting HIV.

The Condom Fairy program: A novel mail-order service for condoms and sexual health supplies

Objective: In recent years college health professionals have used a variety of innovative strategies to increase availability and accessibility of condoms and safer sex products. The purpose of this study is to evaluate the efficacy and efficiency of a mail-order delivery program titled the Condom Fairy. Participants: Seven hundred thirty-three students (63.4% women, 86.1% heterosexual, and 59.2% Caucasian) completed a questionnaire assessing their overall experience with the program. Methods: Participants completed a 60 item questionnaire 30 days after receiving condoms and safer sex products. Results: Overall, 46,980 condoms were distributed over a six semester period. Almost all of the participants (97.4%) reported they ordered male condoms while 58.0% ordered sexual lubricant, 11.1% female condoms, and 10.2% latex dams. Nearly than three-quarters (73.9%) of participants reported they used the condoms provided. Conclusions: Findings support the implementation of innovative mail-in condom and safer sex product programs on college campuses.

Brief HIV stigma scale for Japanese people living with HIV: validation and restructuring using questionnaire survey data

This study aimed of validating a ten-item HIV stigma scale that was originally developed in the U.S.A. and adapting it for Japanese adults with HIV. To adapt the HIV stigma scale for Japanese adults with HIV, a forward-backward translation method was employed. We assessed its validity and reliability using questionnaire survey data collected from 463 Japanese adults with HIV between August 2017 and February 2018. Although the validity was acceptable, the internal consistency in two subcategories in the Japanese version of the HIV stigma scale was low (ω: 0.63, 0.60). Therefore, we performed exploratory factor analysis, which suggested a different model consisting of two subcategories. Then, we assessed the reliability and validity of the scale. The omega values were between 0.83 and 0.89, the absolute correlations (|r|) to other psychological scales for external validity were between 0.34 and 0.51, and the non-response rates for feasibility were between 0.9 and 1.8. The Japanese version of the HIV stigma scale therefore had sufficient reliability and validity. This questionnaire may help identify individuals that need increased care, which may improve their quality of life.

HPV vaccine status and sexual behavior among young sexually-active women in the US: evidence from the National Health and Nutrition Examination Survey, 2007-2014

Concern has been expressed that human papillomavirus (HPV) vaccination programs might promote risky sexual behavior through mechanisms such as risk compensation, behavioral disinhibition, or perceived endorsement of sexual activity. This study assesses whether HPV vaccination status is associated with any differences in selected sexual behaviors among young sexually-active women in the US. Our dataset includes young, adult female respondents from questionnaire data collected in the National Center for Health Statistics' National Health and Nutrition Examination Survey from 2007 to 2014. The empirical approach implements a doubly robust estimation procedure, based on inverse probability of treatment weighting. For robustness, we implement several specifications for the propensity model and the outcomes model. We find no consistent association between HPV vaccination and condom usage or frequency of sex. Specifically, we find no evidence that HPV vaccination is associated with condom usage or with whether a person had sex more than 52 or more than 104 times per year. We find inconsistent evidence that HPV vaccination is associated with a person having sex more than 12 times per year. As in previous research, HPV vaccination does not appear to have a substantive effect on sexual behavior among young sexually-active women in the US.

Do Associations Between Pleasure Ratings and Condom Use During Penile-Vaginal Intercourse Vary by Relationship Type?: A Study of Canadian University Students

Research suggests the relationship between pleasure and condom use during penile-vaginal intercourse (PVI) is associated with relationship status. This online study examined pleasure ratings and condom use at last PVI, stratifying by partner type, among a national sample of Canadian university students. Participants were 715 undergraduates (60.7% women, 39.3% men) who reported on their most recent sexual experience. Condom use decreased with level of relationship commitment, whereas ratings of pleasure increased. Overall, participants were more likely to rate their most recent PVI as Very pleasurable when condoms were not used compared to when condoms were used. However, when stratified by partner type, these differences largely disappeared. For women, with one exception, there were no differences in pleasure between PVI with and without condoms across most partner-type categories. Women in committed dating relationships were more likely to report their last PVI as very pleasurable if condoms were not used than women in these same relationships who had used condoms. Across relationship categories, men who did and did not use condoms did not differ in terms of their pleasure ratings. The results of this study suggest relationship context should be taken into account when assessing condom use experiences.

Factors Associated With Condom Use Among Sexually Active US Adults, National Survey of Family Growth, 2006-2010 and 2011-2013

BACKGROUND

Condom-less sex can increase the risk of acquiring or transmitting HIV.

AIM

To characterize the prevalence of condom use at the most recent sex act and identify factors associated with use of a condom at the most recent sex act in adults in the United States.

METHODS

Data from the cross-sectional National Survey of Family Growth from cycles 2006 through 2010 and 2011 through 2013 were analyzed for sexually active men and women 18 to 44 years old who reported having sex (vaginal, anal, or oral) with an opposite-sex partner in the past 12 months. HIV-related sexual risk behaviors (SRBs) in the past 12 months included sex with at least four opposite-sex partners; exchanging sex for money or drugs; sex with an injection drug user; sex with an HIV-positive person; sex with a man who previously had sex with a man (women only); sex with a man (men only); or sex with a partner who had sex with other partners.

OUTCOMES

The outcome for this analysis was condom use at the most recent anal or vaginal sex act.

RESULTS

Overall prevalence of condom use was 24.8%; only 33.8% of adults with at least one SRB reported the use of a condom. Only 46.4% of unmarried or single men (vs 14.7% married or cohabitating men) and 32.3% unmarried or single women (vs 14.1% married or cohabitating women) with SRBs reported using a condom at the most recent sexual encounter and were less likely to use a condom at the most recent sexual encounter compared with those who did not report SRBs. We did not find a significant relation between using a condom and SRBs in married or cohabitating men and women.

STRENGTHS AND LIMITATIONS

Our analysis adds to the literature on how condom use varies by marital status. We measured the use of condoms at the most recent sexual act, which might not reflect an individual's previous behavior of condom use. Nonetheless, condom use at the most recent sexual act has been documented in previous studies as a valid proxy of condom use over time.

CONCLUSION

Continued efforts are needed to promote condom use in heterosexual adults in the United States, particularly those at high risk for HIV, namely individuals engaging in anal sexual acts and with multiple sex partners. Nasrullah M, Oraka E, Chavez PR, et al. Factors Associated With Condom Use Among Sexually Active US Adults, National Survey of Family Growth, 2006-2010 and 2011-2013. J Sex Med 2017;14:541-550.

Prevalence and risk factors associated with STIs among women initiating contraceptive implants in Kingston, Jamaica

BACKGROUND

There is limited information on rates of STIs in Jamaica due to syndromic management and limited aetiological surveillance. We examined the prevalence of Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG) and Trichomonas vaginalis (TV) and characteristics associated with STIs among sexually active women who participated in a randomised trial of a progestin implant initiation in Jamaica (the Sino-Implant Study (SIS)).

METHODS

SIS was a randomised trial conducted in Kingston, Jamaica, from 2012 to 2014 to evaluate whether initiation of the Sino-Implant (II) led to more unprotected sex among women ages 18-44 years. Data collected included self-reported demographic, sexual behaviour information; and vaginal swabs collected at baseline, 1-month and 3-month follow-up visits for a biomarker of recent semen exposure (prostate-specific antigen (PSA)) and for STIs. We examined associations between STIs and PSA, demographics, sexual behaviour and insertion of an implant, with a repeated-measures analysis using generalised estimating equations (SAS Institute, V.9.3).

RESULTS

Remnant vaginal swabs from 254 of 414 study participants were tested for STIs. At baseline, 29% of participants tested for STIs (n=247) had laboratory-confirmed CT, 5% NG, 23% TV and 45% any STI. In a repeated-measures analysis adjusted for study arm (immediate vs delayed implant insertion), those with PSA detected did not have an increased prevalence of any STI (prevalence ratio (PR)=1.04 (95% CI 0.89 to 1.21)), whereas prevalence decreased for each 1-year increase in age (PR=0.98 (95% CI 0.97 to 0.99)). Immediate implant insertion was not associated with increases in any STI in subsequent visits (PR=1.09 (95% CI 0.94 to 1.27)).

CONCLUSIONS

Although the prevalence of laboratory-confirmed STIs was high, the immediate initiation of a contraceptive implant was not associated with higher STI prevalence rates over 3 months.

TRIAL REGISTRATION NUMBER

NCT01684358.

Prevalence of Chlamydia trachomatis and Neisseria gonorrhoeae infection in adolescents in Northern Italy: an observational school-based study

BACKGROUND

We carried out a study to evaluate the prevalence of Chlamydia trachomatis and Neisseria gonorrhoeae genital infections in school-based adolescents in Northern Italy.

METHODS

Systematic screening for C. trachomatis and N. gonorrhoeae genital infection was performed in 13th grade students in the province of Brescia, an industrialized area in Northern Italy. Student filled in a questionnaire on sexual behaviour and provided a urine sample for microbiological testing.

RESULTS

A total of 2,718 students (mean age: 18.4 years; 59.1% females) provided complete data (62.2% of those eligible). Overall 2,059 students (75.8%) were sexually active (i.e. had had at least one partner), and the mean age at sexual debut was 16.1 years (SD: 1.4). Only 27.5% of the sexually active students reported regular condom use during the previous 6 months, with higher frequency in males than in females (33.8% vs 24.2%). No case of N. gonorrhoeae infection was detected, while C. trachomatis was found in 36 adolescents, with a prevalence of 1.7% (95% CI: 1.2-2.4) among sexually active students, and no statistical difference between females and males (1.9 and 1.4%, respectively). Inconsistent condom use (odds ratio, OR = 5.5) and having had more than one sexual partner during the previous 6 months (OR = 6.8) were associated with an increased risk of Chlamydia infection at multivariate analysis.

CONCLUSION

The prevalence of C. trachomatis infection among sexually active adolescents in Northern Italy was low, despite a high proportion of students who engage in risky sexual behaviour. No cases of N. gonorrhoeae infection were identified.

Factors Associated With Condom Breakage During Anal Intercourse: A Cross-Sectional Study of Men Who Have Sex With Men Recruited in an Online Survey

Background

Within the United States, HIV affects men who have sex with men (MSM) disproportionally compared to the general population. In 2011, MSM represented nearly two-thirds of all new HIV infections while representing less than 2% of the US male population. Condoms continue to be the foundation of many HIV prevention programs; however, the failure rate of condoms during anal intercourse among MSM is estimated to be 0.5% to 8%, and condom breakages leave those affected at high risk for HIV transmission.

Objective

Estimate the frequency of condom breakage and associated demographic and behavioral factors during last act of anal intercourse using data from a national online HIV prevention survey of MSM.

Methods

From March 19 to April 16, 2009, data were collected on 9005 MSM through an online survey of US MSM recruited through a social networking site. Using multivariable logistic regression and controlling for several demographic and sexual risk behaviors, we estimated odds ratios of the association between condom breakage and several risk factors.

Results

In the study, 8063 participants reported having at least one male sexual partner in the last 12 months. The median age of participants was 21 years (range 18-65). More than two-thirds (68.2%, 5498/8063) reported anal intercourse during last sex and 16.90% (927/5498) reported using a condom during last anal intercourse act. Condom breakage was reported by 4.4% (28/635) participants who engaged in receptive anal intercourse and 3.5% (16/459) participants who engaged in insertive anal intercourse, with an overall failure rate of 4.0% (95% CI 3.2%-6.0%). Age (adjusted odds ratio [aOR] per 5 years: 0.53 (95% CI 0.30-0.94), number of male sex partners (aOR per 5 sex partners: 1.03 (95% CI 1.00-1.08), and being high or buzzed during sex with a casual sex partner (aOR: 3.14, 95% CI 1.02-9.60) were associated with condom breakage.

Conclusions

Our results indicate condom breakage is an important problem for MSM that may be more common for younger men, for men with more partners, and during sex with casual partners after alcohol consumption or drug use. A better understanding of why condom breakage occurs more often in these groups is needed to improve educational efforts. Further, during this time of expanded interest in new condom designs, consideration should be given to how condom design might minimize breakage during anal sex.

Nonvolitional sex and HIV-related sexual risk behaviours among MSM in the United States

OBJECTIVE

We estimated the prevalence of lifetime nonvolitional sex (NVS) among MSM by demographic characteristics, and characterized its association with HIV-related sexual risk behaviours among MSM in the United States.

DESIGN

The National Survey of Family Growth (NSFG) is a nationally representative cross-sectional survey of the United States.

METHODS

NSFG data from recent cycles 2002, and 2006-2010 were weighted and analysed for men aged 18-44 years who reported ever having anal or oral intercourse with another male. Associations of lifetime NVS (forced sex by men or women) and age of first NVS experience (<18 vs. ≥18 years), with HIV-related sexual risk behaviour outcomes in the past 12 months (i.e. sex with two or more male sex partners; exchanged sex for money or drugs; sex with IDU; sex with HIV-positive person; sex with two or more female sex partners) were assessed using adjusted prevalence ratios (aPR).

RESULTS

An estimated 3 226 872 or 5.8% of men aged 18-44 years were identified as MSM with 24.6% of them reporting ever experiencing NVS. MSM reporting NVS at age 18 years or older were more likely to have had sex with an IDU [aPR = 4.40; 95% confidence interval (95% CI) 1.78-10.88] and exchanged sex for money or drugs (aPR = 2.52; 95% CI 1.17-5.43) in the past 12 months compared with those not reporting NVS. NVS for MSM less than 18 years of age was associated with exchanging sex for money or drugs.

CONCLUSION

Effective interventions to raise awareness of NVS among MSM and to offer support for MSM who have experienced NVS are needed.

Y chromosome DNA in cervicovaginal self-collected samples of childbearing age women: Implications for epitheliotropic sexually transmitted infections?

AIMS

Assuming a possible association between Y chromosome (Yc)-DNA and sexually transmitted infection (STI) transmission rate, could Yc-DNA be related to an increased prevalence of Human Papillomavirus (HPV), Herpes Simplex Virus (HSV-1/2) and Chlamydia trachomatis (CT)? Could Yc-DNA be used to validate self-reported condom use and sexual behaviors?

MAIN METHODS

Cervicovaginal (CV) self-collected samples of 612 Portuguese women at childbearing age were tested for Yc, HPV, HSV-1/2 and CT by polymerase chain reaction (PCR).

KEY FINDINGS

The prevalence of Yc, HPV, CT and HSV-2 was 4.9%, 17.6%, 11.6% and 2.8%, respectively. There was a statistically significant trend for increased Yc-DNA prevalence in HPV positive samples [odds ratio (OR) 2.35, 95% confidence interval (CI) 1.03-5.31] and oral contraceptive (OC) use (OR 4.73, 95% CI 1.09-20.44). A protective effect of condom use was observed in Yc-DNA detection (OR 0.40, 95% CI 0.18-0.89). No statistically significant difference was found between Yc-DNA, CT and HSV-2 infection. HPV infection risk increased with age (>20 years), young age at first sexual intercourse (FSI) (≤18 years), >1 lifetime sexual partner (LSP) and OC use. Risk factors for CT infection were young age (≤20 years) and young age at FSI (≤18 years). HSV-2 infection risk increased with age (>20 years) and >1 LSP.

SIGNIFICANCE

Considering the prevalence of HPV and CT in Yc positive samples, we hypothesize a current infection due to recent sexual activity. The study of Yc PCR may add information as (i) a predictor of STI transmission and (ii) an indicative biomarker to validate self-reported condom use.

Patterns of adolescent sexual behavior predicting young adult sexually transmitted infections: a latent class analysis approach

Adolescent sexual behavior is multidimensional, yet most studies of the topic use variable-oriented methods that reduce behaviors to a single dimension. In this study, we used a person-oriented approach to model adolescent sexual behavior comprehensively, using data from the National Longitudinal Study of Adolescent Health. We identified five latent classes of adolescent sexual behavior: Abstinent (39%), Oral Sex (10%), Low-Risk (25%), Multi-Partner Normative (12%), and Multi-Partner Early (13%). Membership in riskier classes of sexual behavior was predicted by substance use and depressive symptoms. Class membership was also associated with young adult STI outcomes although these associations differed by gender. Male adolescents' STI rates increased with membership in classes with more risky behaviors whereas females' rates were consistent among all sexually active classes. These findings demonstrate the advantages of examining adolescent sexuality in a way that emphasizes its complexity.

Everyday exposure to benevolent sexism and condom use among college women

Understanding factors related to condom use is critical in reducing the spread of sexually transmitted infections (STIs), especially for women, who are disproportionately affected by many STIs. Extant work has shown that perceived sexism is one such factor associated with lower levels of condom use among women, but has yet to explore whether benevolent sexism in particular-a subtle form of sexism that often goes unnoticed and increases cognitions and behaviors consistent with traditional female gender roles (e.g., sexual submissiveness)-relates negatively to this safer-sex practice. The present research tested this possibility and, in addition, examined whether relational sex motives, which reflect a desire to engage in sex as a means to foster partners' sexual satisfaction, mediated the relation between benevolent sexism and condom use. During the spring of 2011, female college students (N = 158) reported how often they experienced benevolent sexism in their daily lives and, 2 weeks later, their relational sex motives and condom use. Supporting hypotheses results indicated that greater exposure to benevolent sexism was associated significantly with lower condom use, and that relational sex motives mediated this relationship. We discuss implications for women's well-being, including ways to promote safer sex in the face of sexism.

Contraception for adolescents

Contraception is a pillar in reducing adolescent pregnancy rates. The American Academy of Pediatrics recommends that pediatricians develop a working knowledge of contraception to help adolescents reduce risks of and negative health consequences related to unintended pregnancy. Over the past 10 years, a number of new contraceptive methods have become available to adolescents, newer guidance has been issued on existing contraceptive methods, and the evidence base for contraception for special populations (adolescents who have disabilities, are obese, are recipients of solid organ transplants, or are HIV infected) has expanded. The Academy has addressed contraception since 1980, and this policy statement updates the 2007 statement on contraception and adolescents. It provides the pediatrician with a description and rationale for best practices in counseling and prescribing contraception for adolescents. It is supported by an accompanying technical report.

Contraception for adolescents

A working knowledge of contraception will assist the pediatrician in both sexual health promotion as well as treatment of common adolescent gynecologic problems. Best practices in adolescent anticipatory guidance and screening include a sexual health history, screening for pregnancy and sexually transmitted infections, counseling, and if indicated, providing access to contraceptives. Pediatricians' long-term relationships with adolescents and families allow them to help promote healthy sexual decision-making, including abstinence and contraceptive use. Additionally, medical indications for contraception, such as acne, dysmenorrhea, and heavy menstrual bleeding, are frequently uncovered during adolescent visits. This technical report provides an evidence base for the accompanying policy statement and addresses key aspects of adolescent contraceptive use, including the following: (1) sexual history taking, confidentiality, and counseling; (2) adolescent data on the use and side effects of newer contraceptive methods; (3) new data on older contraceptive methods; and (4) evidence supporting the use of contraceptives in adolescent patients with complex medical conditions.

Sexually transmitted infections: progress and challenges since the 1994 International Conference on Population and Development (ICPD)

BACKGROUND

Despite being recognized as an important challenge at the 1994 International Conference on Population and Development (ICPD), sexually transmitted ınfections (STIs) other than HIV are one of the most neglected dimensions of sexual and reproductive health. STIs, often undiagnosed and untreated, have especially harmful consequences for women and their neonates.

PROGRESS SINCE ICPD

During the last two decades, substantial knowledge and experience have accumulated in behavior change programming during the global response to the HIV epidemic which can also be used for prevention of STIs. There has been progress in development and implementation of vaccines against certain STIs such as hepatitis B and the human papilloma virus. Development of a rapid, point-of-care test for syphilis has opened the door to control this infection.

CHALLENGES

The estimated annual incidence of non-HIV STIs has increased by nearly 50% during the period 1995-2008. The growth in STIs has been aggrevated by a combination of factors: lack of accurate, inexpensive diagnostic tests, particularly for chlamydia and gonorrhea; lack of investment to strengthen health systems that can deliver services for diagnosis and management of STIs; absence of surveillance and reporting systems in the majority of countries; political, socioeconomic and cultural barriers that limit recognition of STIs as an important public health problem; and failure to implement policies that are known to work.

RECOMMENDATIONS

Governments, donors and the international community should give higher priority to preventing STIs and HIV; fully implementing behavior change interventions that are known to work; ensuring access of young people to information and services; investing in development of inexpensive technologies for STI diagnosis,treatment and vaccines; and strengthening STI surveillance, including of microbial resistance.

Condom Use by Adolescents

Rates of sexual activity, pregnancies, and births among adolescents have continued to decline during the past decade to historic lows. Despite these positive trends, many adolescents remain at risk for unintended pregnancy and sexually transmitted infections (STIs). This policy statement has been developed to assist the pediatrician in understanding and supporting the use of condoms by their patients to prevent unintended pregnancies and STIs and address barriers to their use. When used consistently and correctly, male latex condoms reduce the risk of pregnancy and many STIs, including HIV. Since the last policy statement published 12 years ago, there is an increased evidence base supporting the protection provided by condoms against STIs. Rates of acquisition of STIs/HIV among adolescents remain unacceptably high. Interventions that increase availability or accessibility to condoms are most efficacious when combined with additional individual, small-group, or community-level activities that include messages about safer sex. Continued research is needed to inform public health interventions for adolescents that increase the consistent and correct use of condoms and promote dual protection of condoms for STI prevention with other effective methods of contraception.

Factors Associated With Parent Support for Condom Education and Availability

Expanding condom-related knowledge and skills and reducing barriers to condom use have the potential to help reduce pregnancies and sexually transmitted infections among youth. These goals are sometimes addressed through condom education and availability (CEA) programs as part of sexuality education in school. Parents are a key constituency in efforts to implement such programs. A representative statewide sample of households with children ( N = 1,093) in California was employed to examine parent support for CEA and the potential influences of demographics (gender, age, and Hispanic ethnicity), sociodemographics (education, religious affiliation, religious service attendance, and political ideology), and condom-related beliefs (belief in condom effectiveness and belief that teens who use condoms during sex are being responsible) on parent support for CEA. The parents in our sample reported a high level of support for CEA ( M = 3.23 on a 4-point scale) and believing in a high level of condom effectiveness ( M = 3.36 on a 4-point scale). In addition, 84% of the parents agreed that teens who use condoms during sex are being responsible. Hierarchical regression analyses showed that parents who were younger, Hispanic, with a lower educational attainment, without a religious affiliation, less religiously observant, and politically liberal were more supportive of CEA. After controlling for these demographic and sociodemographic factors, condom effectiveness and responsibility beliefs each added independently to the predictability of parent support for CEA. These findings suggest that parent education related to condom effectiveness could help increase support for school-based CEA programs.

An evaluation of methods to improve the reporting of adherence in a placebo gel trial in Andhra Pradesh, India

Female sex workers (FSWs) were recruited for a 4-month placebo vaginal gel trial in Nellore, India. Two experiments explored if prior knowledge of biomarkers for unprotected sex and insertion of gel applicators would yield more accurate self-reports. A third experiment compared self-reports of gel use and adherence levels between FSWs randomly assigned to interactive voice response survey (IVRS) and those assigned to paper diaries. Prior knowledge of biomarkers did not improve accuracy of self-reported condom or gel use, nor did it affect actual adherence. Of those who tested positive for the presence of semenogelin in the vagina, 76% reported no unprotected sex in the previous 48 h. Overall, women reported using gel on 90% of days whereas the biomarker indicated gel use on fewer than 50% of days. Compliance to IVRS was low, despite familiarity with mobile phone technology. Additional explorations with other populations are needed.

Correlates of condom self-efficacy in an incarcerated juvenile population

The purpose of this study was to enhance awareness of modes of HIV transmission and increase HIV/sexually transmitted diseases (STD) prevention efforts for incarcerated youth through use of an HIV/STD prevention program guided by the Making Proud Choices! curriculum. A convenience sample of 662 youth aged 13 to 18 was recruited from Alabama juvenile detention facilities. Participants took part in three 2-hour sessions. Baseline and postintervention data were collected. There was no significant difference between males and females in intent to use condoms at baseline and postintervention. Intent to use condoms was the most influential predictor of condom self-efficacy. However, there was little change in condom self-efficacy among males and females at baseline and postintervention.

Residential racial segregation and racial differences in sexual behaviours: an 11-year longitudinal study of sexual risk of adolescents transitioning to adulthood

BACKGROUND

Determining the underlying causes of racial disparities in sexually transmitted infections (STIs) is important. In the USA, rates of the most common STIs range from 5 to 20 times higher for African-Americans compared to Caucasians, and the health consequences of STIs can be serious. Residential racial segregation results in very different contexts for individuals and may be an important determinant of sexual risk. The purpose of this study was to examine how segregation and race interact to impact the age trajectory of sexual risk behaviours.

METHODS

Using 11 years of data from the National Longitudinal Survey of Youth 1997 (1997-2007) and 2000 Census data, the authors performed three-level hierarchical linear regression to examine the associations between hypersegregation, race and a sexual risk behaviour index among black and white non-Hispanic adolescents as they transition to adulthood.

RESULTS

Through most of the teenage years, African-Americans are at higher sexual risk than Caucasians. However, by age 19, Caucasians are at higher risk. Hypersegregation was not associated with increased sexual risk index score on average and did not impact the trajectory of the race-sexual risk association.

CONCLUSIONS

The authors did not find any evidence that hypersegregation was associated with the sex risk index or that it modified the race-sex risk association as individuals got older. Future studies should examine whether segregation is associated with other causes of STI/HIV acquisition risk, such as sexual network patterns.

Condom effectiveness: where are we now?

After performing a review of prospective cohort evaluations, a focussed assessment of the current knowledge base and methodology pertaining to condom effectiveness against sexually transmissible infections, including HIV, was also conducted. Key observations included the point that studies of condom effectiveness are inherently complex and the potential forms of study bias all generally favour the null hypothesis. Perhaps the most challenging obstacle to rigor in these studies lies in determining which events of condom-protected sex occurred before infection as opposed to after infection when, in fact, infection occurs. This problem leads to misclassification bias; however, other sources of misclassification bias are common. Greater attention to the selection of a recall period, improved precision of self-reported measures, and accounting for condom use errors and problems are critical steps that must occur to promote rigor in these studies. Despite multiple shortcomings, prospective studies of condom effectiveness provide a reasonably favourable evaluation. Subsequent studies, however, should be designed to greatly reduce the error variance that predisposes condom effectiveness studies to type 2 errors that mask the potential value of condoms.

Organizational policy recommendations for control of STI/HIV among female sex workers in China: regular examination of workers in social hygiene clinics

This article aims to address female sex workers at high risk for contracting HIV in China by recommending evidence-based socio-structural interventions and policies at the national level that have yielded effective outcomes in other countries. National governments such as the Philippines and Hong Kong have utilized the Social Hygiene Clinic (SHC) model. A similar national policy can be highly effective in China. Evidence-based research study results indicate significant reductions in STI and consistent condom use among female sex workers in both China and the Philippines. Consistent condom use in both countries continues to be significantly associated with interpersonal- and venue-level factors. Individuals who had higher appointment-keeping ratios in the Philippines had higher rates of consistent condom use (OR = 2.7, 95% CI = 1.6-3.7) and significantly lower rates of STI (OR = 0.43, 95% CI = 0.26-0.57). By beginning with provinces, which already have a good relationship between establishment venues and the local Health Department, China can develop city ordinances and establishment regulations that begin to require regular examinations of female sex workers and entertainers in the local STI clinic.

Limitations of the dye-based method for determining vaginal applicator use in microbicide trials

BACKGROUND

A dye-based method for determining applicator usage in microbicide trials has been developed to assess whether applicators have been exposed to vaginal fluid. Our objective was to evaluate this method on polypropylene HTI applicators that are being widely used in several effectiveness trials of microbicides.

METHODS

Study participants enrolled in a clinical trial assessing SPL7013 (VivaGel) inserted gel intravaginally twice daily for 14 days and returned used and unused applicators. Before staining, smears were prepared from each participant-inserted applicator, Gram stained and assessed independently for the presence of vaginal cells and bacteria. Of the 169 participant-inserted applicators, 168 (99%) had vaginal cells identified by Gram stain.

PARTICIPANT

Inserted applicators were stained with a 0.05% FD & C blue dye No. 1 solution and compared with 70 inserted positive control applicators and 70 unused negative control applicators. Intravaginally inserted applicators should stain turquoise, whereas unused applicators should not retain any stain. The individual responsible for labeling and preparing the applicators did not serve as an evaluator.

RESULTS

: Under optimized conditions, the sensitivity and specificity ranged from 81% to 95% and 86% to 93%, respectively for single use and unused applicators. The dye-based method was only 47% to 77% sensitive for participant-inserted applicators obtained from women using gel twice daily.

CONCLUSION

The dye test for HTI polypropylene applicators had a sensitivity of 47% to 95%, depending on the evaluator and whether gel was present in the vagina. The sensitivity was decreased with multiple gel applications. The dye-based method cannot be recommended for HTI polypropylene applicators to monitor product adherence.

Social desirability bias in family planning studies: a neglected problem

Studies on family planning methods traditionally have relied on self-reports of unknown validity and reproducibility. Social desirability bias, a type of information bias, occurs when study participants respond inaccurately - but in ways that will be viewed favorably by others. Several lines of evidence reveal that this bias can be powerful in sexual matters, including reports of coitus, use of contraceptives and induced abortion. For example, studies using vaginal prostate-specific antigen testing reveal underreporting of unprotected coitus and overreporting of barrier contraceptive use. Medication Event Monitoring System studies, which electronically record the time of pill dispensing from a bottle or pack, indicate widespread exaggeration of adherence to pill-taking regimens, including oral contraceptives. Comparisons of provider data and self-reports of induced abortions reveal extensive underreporting of induced abortion. Reliance on self-reported data underestimates contraceptive efficacy. Although techniques to minimize this bias exist, they are infrequently used in family planning studies. Greater skepticism about self-reports and more objective means of documenting coitus and contraceptive use are needed if contraceptive efficacy is to be accurately measured.

Using sexually transmitted infection biomarkers to validate reporting of sexual behavior within a randomized, experimental evaluation of interviewing methods

This paper examines the reporting of sexual and other risk behaviors within a randomized experiment using a computerized versus face-to-face interview mode. Biomarkers for sexually transmitted infection (STI) were used to validate self-reported behavior by interview mode. As part of a parent study evaluating home versus clinic screening and diagnosis for STIs, 818 women aged 18-40 years were recruited in 2004 at or near a primary care clinic in São Paulo, Brazil, and were randomized to a face-to-face interview or audio computer-assisted self-interviewing. Ninety-six percent of participants were tested for chlamydia, gonorrhea, and trichomoniasis. Reporting of STI risk behavior was consistently higher with the computerized mode of interview. Stronger associations between risk behaviors and STI were found with the computerized interview after controlling for sociodemographic factors. These results were obtained by using logistic regression approaches, as well as statistical methods that address potential residual confounding and covariate endogeneity. Furthermore, STI-positive participants were more likely than STI-negative participants to underreport risk behavior in the face-to-face interview. Results strongly suggest that computerized interviewing provides more accurate and reliable behavioral data. The analyses also confirm the benefits of using data on prevalent STIs for externally validating behavioral reporting.