Division of Global HIV and TB Prevention, Centers for Disease Control and Prevention, Hanoi, Vietnam.
The National Cancer Institute, Division of Cancer Epidemiology and Genetics, Metabolic Epidemiology Branch, National Institutes of Health, USA.
J Epidemiol Glob Health. 2021 Jun;11(2):194-199. doi: 10.2991/jegh.k.210312.001. Epub 2021 Mar 20.
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.
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).
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.
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.
本研究在越南海防省的三个地区进行，旨在估计 2019 年 6 月至 7 月期间女性性工作者（FSW）的人口规模。
该研究包括选择三个地区、编制可访问的FSW 聚集场所清单、在随机选择的场所向 FSW 分发第一独特对象（首次捕获）和第二独特对象（第二次捕获）以及实施微型受访者驱动抽样（mRDS）调查（第三次捕获）。FSW 的人口规模是根据每一轮的 FSW 数量、第二次和第三次捕获中“捕获”的 FSW 数量计算得出的。此外，mRDS 中捕获的个人网络规模数据用于使用连续抽样人口规模估计（SS-PSE）测量三个地区内的 FSW 人口。
使用三源捕获-再捕获（3S-CRC）估计的三个选定地区的总 FSW 数为 958，略低于使用 SS-PSE 估计的 1192。3S-CRC 方法得出的省级估计数为 1911，而 SS-PSE 方法得出的全省总 FSW 数为 2379。
两种技术在地区和省级水平上产生了不同的 PSE，并得出的估计数低于使用项目数据得出的估计数。为了规划所有 FSW 的艾滋病毒预防和护理服务需求，需要进行额外的研究来估计那些非场所型和使用社交媒体平台提供服务的性工作者的数量。
