PMID- 32959609 OWN - NLM STAT- MEDLINE DCOM- 20210820 LR - 20210820 IS - 2210-6014 (Electronic) IS - 2210-6006 (Print) IS - 2210-6006 (Linking) VI - 11 IP - 1 DP - 2021 Mar TI - Estimated Number of People who Inject Drugs in Ho Chi Minh City, Vietnam: Findings from a Two-survey Capture-Recapture Population Size Estimation Exercise. PG - 76-82 LID - 10.2991/jegh.k.200615.001 [doi] AB - BACKGROUND: HIV/AIDS program managers in Ho Chi Minh City (HCMC), Vietnam have always relied on the police reports and the UNAIDS Estimation and Projection Package for population size estimation of People Who Inject Drugs (PWID). METHODS: We used Respondent-driven Sampling (RDS) to implement a two-source capture-recapture study to estimate the population size of PWID in HCMC in 2017. The study was implemented in seven out of 24 districts and included men and women ages 18 years and older who reported injecting illicit drugs in the last 90 days, and who had lived in the city for the past six months. Estimates of the PWID population size for each of the seven districts were calculated accounting for the RDS sampling design. These were then adjusted to account for the district sampling probabilities to give an estimate for HCMC. Chapman two-source capture-recapture estimates of population size, based on simple random sampling assumptions, were also calculated for comparison. RESULTS: The estimates resulted in a population size for HCMC of 19,155 [95% Confidence Interval (CI): 17,006-25,039] using the RDS approach and 17,947 (95% CI: 15,968-19,928), using the Chapman approach. CONCLUSION: The two-survey capture-recapture exercise provided estimates of PWID in HCMC - based on Chapman estimator and RDS approach - are similar. For planning HIV prevention and care service needs among PWID in HCMC, both estimates may need to be taken into consideration together with size estimates from other sources. CI - (c) 2020 The Authors. Published by Atlantis Press International B.V. FAU - Van Khuu, Nghia AU - Van Khuu N AD - Department of HIV/AIDS, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam. FAU - Nguyen, Phuc Duy AU - Nguyen PD AD - Department of HIV/AIDS, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam. FAU - Le, Giang Tong AU - Le GT AD - Program Development Office, United States Agency for International Development, Hanoi, Vietnam. FAU - Luong, Hoa Thi Yen AU - Luong HTY AD - Division of Global HIV and TB Prevention, Centers for Disease Control and Prevention, Hanoi, Vietnam. FAU - Tieu, Van Thi Thu AU - Tieu VTT AD - Department of HIV Prevention, Ho Chi Minh City Provincial AIDS Committee, Ho Chi Minh City, Vietnam. FAU - Tran, Hau Phuc AU - Tran HP AD - Department of HIV/AIDS, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam. FAU - Nguyen, Thuong Vu AU - Nguyen TV AD - Department of HIV/AIDS, Pasteur Institute of Ho Chi Minh City, Ho Chi Minh City, Vietnam. FAU - Morgan, Meade AU - Morgan M AD - Division of Global HIV and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA. FAU - Abdul-Quader, Abu S AU - Abdul-Quader AS AUID- ORCID: 0000-0001-7502-3520 AD - Division of Global HIV and TB Prevention, Centers for Disease Control and Prevention, Hanoi, Vietnam. LA - eng GR - U2G GH001628/GH/CGH CDC HHS/United States GR - PEPFAR/PEPFAR/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. DEP - 20200619 PL - Switzerland TA - J Epidemiol Glob Health JT - Journal of epidemiology and global health JID - 101592084 SB - IM MH - Adolescent MH - Adult MH - Cities/epidemiology MH - Female MH - Humans MH - Male MH - Middle Aged MH - Population Density MH - *Substance Abuse, Intravenous/epidemiology MH - Surveys and Questionnaires MH - Vietnam/epidemiology MH - Young Adult PMC - PMC7958280 OTO - NOTNLM OT - Ho Chi Minh City OT - Population size estimation OT - Vietnam OT - people who inject drugs OT - respondent-driven sampling COIS- The authors declare they have no conflicts of interest. EDAT- 2020/09/23 06:00 MHDA- 2021/08/21 06:00 PMCR- 2021/03/01 CRDT- 2020/09/22 05:48 PHST- 2020/03/20 00:00 [received] PHST- 2020/05/29 00:00 [accepted] PHST- 2020/09/23 06:00 [pubmed] PHST- 2021/08/21 06:00 [medline] PHST- 2020/09/22 05:48 [entrez] PHST- 2021/03/01 00:00 [pmc-release] AID - jegh.k.200615.001 [pii] AID - JEGH-11-1-76 [pii] AID - 10.2991/jegh.k.200615.001 [doi] PST - ppublish SO - J Epidemiol Glob Health. 2021 Mar;11(1):76-82. doi: 10.2991/jegh.k.200615.001. Epub 2020 Jun 19.