ArticleJournal of the International AIDS Society2013
Coital frequency and condom use in monogamous and concurrent sexual relationships in Cape Town, South Africa.
Article in Journal of the International AIDS Society, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Predictors of perceived male partner concurrency among women at risk for HIV and STI acquisition in Durban, South Africa.AIDS research and therapy · 2016Trial
- Article
- SimpactCyan 1.0: An Open-source Simulator for Individual-Based Models in HIV Epidemiology with R and Python Interfaces.Scientific reports · 2019Article
- Sexual Partner Types and Incident HIV Infection Among Rural South African Adolescent Girls and Young Women Enrolled in HPTN 068: A Latent Class Analysis.Journal of acquired immune deficiency syndromes (1999) · 2019Article
- Article
- Relational concurrency, stages of infection, and the evolution of HIV set point viral load.Virus evolution · 2018Article
- Minimal coital dilution in Accra, Ghana.Journal of acquired immune deficiency syndromes (1999) · 2015Article
- Self-reported sex partner dates for use in measuring concurrent sexual partnerships: correspondence between two assessment methods.Archives of sexual behavior · 2015Article
- Article
- Concurrent partnerships in Cape Town, South Africa: race and sex differences in prevalence and duration of overlap.Journal of the International AIDS Society · 2015Article
- A new approach to measuring partnership concurrency and its association with HIV risk in couples.AIDS and behavior · 2014Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionA decreased frequency of unprotected sex during episodes of concurrent relationships may dramatically reduce the role of concurrency in accelerating the spread of HIV. Such a decrease could be the result of coital dilution - the reduction in per-partner coital frequency from additional partners - and/or increased condom use during concurrency. To study the effect of concurrency on the frequency of unprotected sex, we examined sexual behaviour data from three communities with high HIV prevalence around Cape Town, South Africa.
methodsWe conducted a cross-sectional survey from June 2011 to February 2012 using audio computer-assisted self-interviewing to reconstruct one-year sexual histories, with a focus on coital frequency and condom use. Participants were randomly sampled from a previous TB and HIV prevalence survey. Mixed effects logistic and Poisson regression models were fitted to data from 527 sexually active adults reporting on 1210 relationship episodes to evaluate the effect of concurrency status on consistent condom use and coital frequency.
resultsThe median of the per-partner weekly average coital frequency was 2 (IQR: 1-3), and consistent condom use was reported for 36% of the relationship episodes. Neither per-partner coital frequency nor consistent condom use changed significantly during episodes of concurrency (aIRR=1.05; 95% confidence interval (CI): 0.99-1.24 and aOR=1.01; 95% CI: 0.38-2.68, respectively). Being male, coloured, having a tertiary education, and having a relationship between 2 weeks and 9 months were associated with higher coital frequencies. Being coloured, and having a relationship lasting for more than 9 months, was associated with inconsistent condom use.
conclusionsWe found no evidence for coital dilution or for increased condom use during concurrent relationship episodes in three communities around Cape Town with high HIV prevalence. Given the low levels of self-reported consistent condom use, our findings suggest that if the frequency of unprotected sex with each of the sexual partners is sustained during concurrent relationships, HIV-positive individuals with concurrent partners may disproportionately contribute to onward HIV transmission.
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