Estimating the Population Size of Female Sex Worker Population in Tehran, Iran: Application of Direct Capture–Recapture Method
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There is no reliable estimate of the size of female sex workers (FSWs). This study aimed to estimate the size of FSWs in south of Tehran, Iran in 2016 using direct capture–recapture method. In the capture phase, the hangouts of FSWs were mapped as their meeting places. FSWs who agreed to participate in the study tagged with a T-shirt. The recapture phase was implemented at the same places tagging FSWs with a blue bracelet. The total estimated size of FSWs was 690 (95% CI 633, 747). About 89.43% of FSWs experienced sexual intercourse prior to age 20. The prevalence of human immunodeficiency virus infection among FSWs was 4.60%. The estimated population size of FSWs was much more than our expectation. This issue must be the focus of special attention for planning prevention strategies. However, alternative estimates require to estimating the number FSWs, reliably.
KeywordsSex workers Human immunodeficiency virus Women Capture–recapture Iran
This study has been adapted from an MSc thesis at Hamadan University of Medical Sciences. The Authors would like to thank all contributors and participants who make this study project possible.
The study was partially funded by the Vice-chancellor for research and Technology, Hamadan University of Medical Sciences (Grant No. 9403121140).
Compliance with Ethical Standards
Conflict of interest
The authors have no conflict of interest to declare for this study.
This study was approved by the Ethics Committee of Hamadan University of Medical Sciences (UMSHA.REC.1394.56).
Informed consent was obtained from all individual participants included in the study.
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