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https://hdl.handle.net/1959.11/18773
Title: | Sexual Partnership Patterns Among South African Adolescent Girls Enrolled in STI Preventions Trial Network 068: Measurement Challenges and Implications for HIV/STI Transmission | Contributor(s): | Nguyen, Nadia L (author); Powers, Kimberly A (author); Hughes, James (author); MacPhail, Catherine (author)![]() |
Publication Date: | 2015 | DOI: | 10.1097/olq.0000000000000357 | Handle Link: | https://hdl.handle.net/1959.11/18773 | Abstract: | Background: Estimates of sexual partnership durations, gaps between partnerships, and overlaps across partnerships are important for understanding sexual partnership patterns and developing interventions to prevent transmission of HIV/sexually transmitted infections (STIs). However, a validated, optimal approach for estimating these parameters, particularly when partnerships are ongoing, has not been established. Methods: We assessed 4 approaches for estimating partnership parameters using cross-sectional reports on dates of first and most recent sex and partnership status (ongoing or not) from 654 adolescent girls in rural South Africa. The first, commonly used, approach assumes all partnerships have ended, resulting in underestimated durations for ongoing partnerships. The second approach treats reportedly ongoing partnerships as right-censored, resulting in bias if partnership status is reported with error. We propose 2 "hybrid" approaches, which assign partnership status to reportedly ongoing partnerships based on how recently girls last had sex with their partner. We estimate partnership duration, gap length, and overlap length under each approach using Kaplan-Meier methods with a robust variance estimator. Results: Median partnership duration and overlap length varied considerably across approaches (from 368 to 1024 days and 168 to 409 days, respectively), but gap length was stable. Lifetime prevalence of concurrency ranged from 28% to 33%, and at least half of gap lengths were shorter than 6 months, suggesting considerable potential for HIV/STI transmission. Conclusions: Estimates of partnership duration and overlap lengths are highly dependent on measurement approach. Understanding the effect of different approaches on estimates is critical for interpreting partnership data and using estimates to predict HIV/STI transmission rates. | Publication Type: | Journal Article | Source of Publication: | Sexually Transmitted Diseases, 42(11), p. 612-618 | Publisher: | Lippincott Williams & Wilkins | Place of Publication: | United States of America | ISSN: | 1537-4521 0148-5717 |
Fields of Research (FoR) 2008: | 111799 Public Health and Health Services not elsewhere classified 111706 Epidemiology |
Fields of Research (FoR) 2020: | 420399 Health services and systems not elsewhere classified 420299 Epidemiology not elsewhere classified |
Socio-Economic Objective (SEO) 2008: | 920507 Women's Health | Socio-Economic Objective (SEO) 2020: | 200509 Women's and maternal health | Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article |
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