Journal of Epidemiology and Global Health

Volume 11, Issue 2, June 2021, Pages 194 - 199

Population Size Estimation of Female Sex Workers in Hai Phong, Vietnam: Use of Three Source Capture–Recapture Method

Authors
Ly Thuy Nguyen1, *, ORCID, Shreya Patel2, Nga Thi Nguyen3, Hoa Hoang Gia3, Henry F. Raymond4, ORCID, Van Thi Hai Hoang5, ORCID, Abu S. Abdul-Quader6, ORCID
1Division of Global HIV and TB Prevention, Centers for Disease Control and Prevention, Hanoi, Vietnam
2The National Cancer Institute, Division of Cancer Epidemiology and Genetics, Metabolic Epidemiology Branch, National Institutes of Health, USA
3Department of HIV Surveillance, Monitoring and Evaluation, Provincial HIV/AIDS Control, Hai Phong, Vietnam
4Department of Biostatistics and Epidemiology, Rutgers University School of Public Health, Piscataway, NJ, USA
5Department of Global Health, School of Preventive Medicine and Public Health, Hanoi Medical University, Hanoi, Vietnam
6Division of Global HIV and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
*Corresponding author. Email: ozx6@cdc.gov
Corresponding Author
Ly Thuy Nguyen
Received 10 August 2020, Accepted 7 December 2020, Available Online 20 March 2021.
DOI
https://doi.org/10.2991/jegh.k.210312.001How to use a DOI?
Keywords
Population size estimate; three source capture–recapture; respondent-driven sampling; female sex worker; successive sampling
Abstract

Introduction: A study was conducted in three districts in Hai Phong province, Vietnam to estimate the population size of the Female Sex Workers (FSW) in June–July 2019.

Methods: The procedures included selection of three districts, compilation of a list of accessible venues where FSW congregate, distribution of first unique objects (first capture) and second unique objects (second capture) to FSW in randomly selected venues and implementation of a Mini-Respondent Driven Sampling (mRDS) Survey (third capture). Population size of the FSW was calculated based on the number of FSW in each round, number of FSW ‘recaptured’ during the second and the third captures. Additionally, personal network size data captured in the mRDS was used to measure the population of FSW within the three districts using Successive Sampling Population Size Estimates (SS-PSE).

Results: The total estimated FSWs in the three selected districts, using Three Source Capture–Recapture (3S-CRC) was 958, which is slightly lower than that estimated using SS-PSE – 1192. The 3S-CRC method yielded a provincial estimate of 1911 while the SS-PSE method resulted in a total of 2379 FSW for the province.

Conclusion: Two techniques produced different PSE at both the district and the province levels and resulted in estimates lower than ones produced using programmatic data. For planning HIV prevention and care service needs among all FSWs, additional studies are needed to estimate the number of sex workers who are not venue-based and use social media platforms to sell services.

Copyright
© 2021 The Authors. Published by Atlantis Press International B.V.
Open Access
This is an open access article distributed under the CC BY-NC 4.0 license (http://creativecommons.org/licenses/by-nc/4.0/).

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Journal
Journal of Epidemiology and Global Health
Volume-Issue
11 - 2
Pages
194 - 199
Publication Date
2021/03/20
ISSN (Online)
2210-6014
ISSN (Print)
2210-6006
DOI
https://doi.org/10.2991/jegh.k.210312.001How to use a DOI?
Copyright
© 2021 The Authors. Published by Atlantis Press International B.V.
Open Access
This is an open access article distributed under the CC BY-NC 4.0 license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - JOUR
AU  - Ly Thuy Nguyen
AU  - Shreya Patel
AU  - Nga Thi Nguyen
AU  - Hoa Hoang Gia
AU  - Henry F. Raymond
AU  - Van Thi Hai Hoang
AU  - Abu S. Abdul-Quader
PY  - 2021
DA  - 2021/03/20
TI  - Population Size Estimation of Female Sex Workers in Hai Phong, Vietnam: Use of Three Source Capture–Recapture Method
JO  - Journal of Epidemiology and Global Health
SP  - 194
EP  - 199
VL  - 11
IS  - 2
SN  - 2210-6014
UR  - https://doi.org/10.2991/jegh.k.210312.001
DO  - https://doi.org/10.2991/jegh.k.210312.001
ID  - Nguyen2021
ER  -