Dating App Use and Sexual Risk: Understanding the Associations between Casual Sex Motivation, Number of Sexual Partners, and STI Diagnoses

Objective: This study focused on casual sex motivation to explore why some users tend to have more sexual partners and are more likely to take risks in sexual practices, thereby raising their chances of contracting sexually transmitted infections (STIs). Methods: We recruited Chinese heterosexual dating app users (N = 582) online to investigate the serial mediation model. Results: Casual sex motivation for dating app use was not directly related to the diagnoses of STIs. Number of sexual partners and frequency of risky sexual behavior serially mediated the relationship between casual sex motivation and STI diagnoses. Conclusions: Using dating apps for casual sex motivation is not necessarily associated with higher incidences of STIs, provided that users do not engage in risky sexual practices.

Sexual behaviour change following HIV testing services: a systematic review and meta-analysis

INTRODUCTION

Learning one's HIV status through HIV testing services (HTS) is an essential step toward accessing treatment and linking to preventive services for those at high HIV risk. HTS may impact subsequent sexual behaviour, but the degree to which this varies by population or is true in the setting of contemporary HIV prevention activities is largely unknown. As part of the 2019 World Health Organization Consolidated Guidelines on HTS, we undertook a systematic review and meta-analysis to determine the effect of HTS on sexual behaviour.

METHODS

We searched nine electronic databases for studies published between July 2010 and December 2019. We included studies that reported on at least one outcome (condom use [defined as the frequency of condom use or condom-protected sex], number of sex partners, HIV incidence, STI incidence/prevalence). We included studies that prospectively assessed outcomes and that fit into one of three categories: (1) those evaluating more versus less-intensive HTS, (2) those of populations receiving HTS versus not and (3) those evaluating outcomes after versus before HTS. We conducted meta-analyses using random-effects models.

RESULTS AND DISCUSSION

Of 29 980 studies screened, 76 studies were included. Thirty-eight studies were randomized controlled trials, 36 were cohort studies, one was quasi-experimental and one was a serial cross-sectional study. There was no significant difference in condom use among individuals receiving more-intensive HTS compared to less-intensive HTS (relative risk [RR]=1.03; 95% CI: 0.99 to 1.07). Condom use was significantly higher after receiving HTS compared to before HTS for individuals newly diagnosed with HIV (RR = 1.65; 95% CI: 1.36 to 1.99) and marginally significantly higher for individuals receiving an HIV-negative diagnosis (RR = 1.63; 95% CI: 1.01 to 2.62). Individuals receiving more-intensive HTS reported fewer sex partners at follow-up than those receiving less-intensive HTS, but the finding was not statistically significant (mean difference = -0.28; 95% CI: -3.66, 3.10).

CONCLUSIONS

Our findings highlight the importance of using limited resources towards HTS strategies that focus on early HIV diagnosis, treatment and prevention services rather than resources dedicated to supplementing or enhancing HTS with additional counselling or other interventions.

Trends in pre-military sexually transmitted infections and associated risk behaviours in Canadian Armed Forces recruits

Background

Sexually transmitted infections (STIs) have historically been problematic for militaries. Recent reports indicating that rates of STIs among young male Canadian Armed Forces (CAF) members are higher than civilians prompted a need to better understand CAF members' reported rates of STIs and their behavioural risk factors for STIs. This study examined the prevalence of self-reported pre-military sexual behaviours (i.e. number of sexual partners and frequency of condom use) and history of a STI diagnosis among CAF recruits attending basic military training using data collected from the Recruit Health Questionnaire.

Methods

Data came from 50,603 recruits who participated in the survey between 2003 and 2018 (84.9% male, 78.6% Non-Commissioned Member candidates, 64.9% aged between 17 and 24 years).

Results

Among sexually active recruits, the proportions who had more than one sexual partner in the previous year increased from 30.5% in 2003 (95% CI, 27.8-33.4) to 35.5% in 2018 (95% CI, 34.0-37.0). Of recruits who were not in an exclusive relationship at the time, the proportions who reported always using a condom decreased from 50.8% in 2003 (95% CI, 46.4-55.1) to 40.2% in 2018 (95% CI, 38.3-42.2). Overall, 5.5% (95% CI, 5.3-5.7) reported ever having received a STI diagnosis. Demographic differences by age and sex were also found.

Conclusion

These observations provide an indication of the baseline, pre-enlistment STI risk behaviours, and STI history among CAF recruits, and may provide insight into avenues for targeted interventions and health promotion programming, such as education and screening initiatives.

The relationship between chronic diseases and number of sexual partners: an exploratory analysis

BACKGROUND

We investigated sex-specific associations between lifetime number of sexual partners and several health outcomes in a large sample of older adults in England.

METHODS

We used cross-sectional data from 2537 men and 3185 women aged ≥50 years participating in the English Longitudinal Study of Ageing. Participants reported the number of sexual partners they had had in their lifetime. Outcomes were self-rated health and self-reported limiting long-standing illness, cancer, coronary heart disease, and stroke. We used logistic regression to analyse associations between lifetime number of sexual partners and health outcomes, adjusted for relevant sociodemographic and health-related covariates.

RESULTS

Having had 10 or more lifetime sexual partners was associated with higher odds of reporting a diagnosis of cancer than having had 0-1 sexual partners in men (OR 1.69, 95% CI 1.01 to 2.83) and women (OR 1.91, 95% CI 1.04 to 3.51), respectively. Women who had 10 or more lifetime sexual partners also had higher odds of reporting a limiting long-standing illness (OR 1.64, 95% CI 1.15 to 2.35). No other statistically significant associations were observed.

CONCLUSIONS

A higher lifetime number of sexual partners is associated with increased odds of reported cancer. Longitudinal research is required to establish causality. Understanding the predictive value of lifetime number of sexual partners as a behavioural risk factor may improve clinical assessment of cancer risk in older adults.

Sociodemographic and behavioural correlates of lifetime number of sexual partners: findings from the English Longitudinal Study of Ageing

BACKGROUND

No current data are available on correlates of lifetime sexual partners at older ages. This study aimed to explore correlates of the lifetime number of sexual partners in a sample of older adults.

METHOD

Data were from 3054 men and 3867 women aged ≥50 years participating in the English Longitudinal Study of Ageing. Participants reported their lifetime number of sexual partners and a range of sociodemographic characteristics and health behaviours. Multivariable multinomial logistic regression was used to examine correlates of lifetime number of sexual partners, with analyses performed separately for men and women and weighted for non-response.

RESULTS

Younger age, being separated/divorced or single/never married, being a current or former smoker, and drinking alcohol regularly or frequently were independently associated with a higher number of sexual partners in both men and women. Homosexuality in men and bisexuality in women were also associated with a higher number of sexual partners. White ethnicity, regular moderate and vigorous physical activity, and the absence of limiting long-standing illness were independently associated with a higher number of sexual partners in women only, and being in the highest and lowest quintiles of wealth was independently associated with a higher number of sexual partners in men only.

CONCLUSIONS

A higher lifetime number of sexual partners is associated with a number of sociodemographic and behavioural factors. An understanding of who is more likely to have had more sexual partners may help health practitioners to identify individuals who are at greatest risk of sexually transmitted infection and their associated health complications across the life course.

HIV Epidemiology in Uganda: survey based on age, gender, number of sexual partners and frequency of testing

Background

Human Immunodeficiency Virus (HIV) is a major cause of morbidity and mortality in the world. When compared to the developed countries where HIV prevalence is on the decline, sub-Saharan Africa has experienced either a rise or stagnation in rates.

Objectives

The aim of this study was to test and educate the community in the villages of Masajja and Kibiri of Wakiso district in Uganda for HIV and safe sex practices.

Methods

A sociodemographic survey was also performed to obtain data for gender, age, number of sexual partners during the previous year, frequency of testing and if ever tested positive for other sexually transmitted diseases (STDs).

Results

While 7 of the tested individuals were positive for HIV, 77 reported that they had once tested positive for other STDs. Of the 7 HIV positive individuals, 4 were females and 3 males. Over half of the tested individuals reported only one sexual partner in past 12 months and more than a quarter were sexually active with more than one partner. Majority of our population also reported getting HIV tested every 6 months or less.

Conclusion

Robust implementation of methods such as education and frequent testing can lower Uganda's prevalence of HIV even further.

Identification and risk assessment of Swedish youth at risk of chlamydia

AIMS

The aim of the study was to identify youth at high risk of chlamydia including variables related to sexual health and negative experiences of sexuality.

METHODS

In late 2009, a questionnaire on sexuality was answered by Swedish youth. The study sample was self-selected from different Internet communities. Data from 6544 sexually active participants, aged 15-24 years, were analyzed in a multivariable logistic regression model. Discriminative power was measured by the area under the receiver operating characteristic curve.

RESULTS

In the univariate analysis, self-reported chlamydia was associated with most risk behavior variables, experience of coerced sex, and reimbursement for sex, with slight gender variation. The factors that best predicted self-reported chlamydia among females were number of partners, age, and having been reimbursed for sex. Among males, the number of partners and alcohol consumption were the strongest predictors. Increasing number of partners up to 10 during the past 12 months was the most important predictor for both genders. A skewed distribution of chlamydia was demonstrated, in that 37.6% of cases in females and 38.6% in males were estimated to occur among a tenth of the population.

CONCLUSIONS

Testing, prevention, and care for chlamydia should be directed toward those most at risk, as they account for a large proportion of the total number of chlamydia cases. The special needs of the high-risk group need to be acknowledged and chlamydia regarded as a possible marker for risk behavior and negative sexuality experiences.