Using Capture-Recapture Methods to Estimate the Population of People Who Inject Drugs in Washington, DC

Monica S. Ruiz, Allison O’Rourke, Sean Travis Allen

Research output: Contribution to journalArticle

Abstract

No current estimates exist for the size of the population of people who inject drugs (PWID) in the District of Columbia (DC). The WHO/UNAIDS Guidelines on Estimating the Size of Populations Most at Risk to HIV was used as the methodological framework to estimate the DC PWID population. The capture phase recruited harm reduction agency clients; the recapture phase recruited community-based PWID. The 951 participants were predominantly Black (83.9 %), male (69.8 %), and 40+ years of age (68.2 %). Approximately 50.3 % reported injecting drugs in the past 30 days. We estimate approximately 8829 (95 % CI 4899 and 12,759) PWID in DC. When adjusted for possible missed sub-populations of PWID, the estimate increases to 12,000; thus, the original estimate of approximately 9000 should be viewed in the context of the 95 % confidence interval. These evidence-based estimations should be used to determine program delivery needs and resource allocation for PWID in Washington, DC.

Original languageEnglish (US)
Pages (from-to)363-368
Number of pages6
JournalAIDS and Behavior
Volume20
Issue number2
DOIs
StatePublished - Feb 1 2016

Fingerprint

Pharmaceutical Preparations
Population
Harm Reduction
Resource Allocation
Population Density
HIV
Guidelines
Confidence Intervals

Keywords

  • Capture-recapture
  • HIV
  • Population estimation
  • PWID

ASJC Scopus subject areas

  • Social Psychology
  • Public Health, Environmental and Occupational Health
  • Infectious Diseases

Cite this

Using Capture-Recapture Methods to Estimate the Population of People Who Inject Drugs in Washington, DC. / Ruiz, Monica S.; O’Rourke, Allison; Allen, Sean Travis.

In: AIDS and Behavior, Vol. 20, No. 2, 01.02.2016, p. 363-368.

Research output: Contribution to journalArticle

Ruiz, Monica S. ; O’Rourke, Allison ; Allen, Sean Travis. / Using Capture-Recapture Methods to Estimate the Population of People Who Inject Drugs in Washington, DC. In: AIDS and Behavior. 2016 ; Vol. 20, No. 2. pp. 363-368.
@article{724116b6994d4d82a97432f879c35deb,
title = "Using Capture-Recapture Methods to Estimate the Population of People Who Inject Drugs in Washington, DC",
abstract = "No current estimates exist for the size of the population of people who inject drugs (PWID) in the District of Columbia (DC). The WHO/UNAIDS Guidelines on Estimating the Size of Populations Most at Risk to HIV was used as the methodological framework to estimate the DC PWID population. The capture phase recruited harm reduction agency clients; the recapture phase recruited community-based PWID. The 951 participants were predominantly Black (83.9 {\%}), male (69.8 {\%}), and 40+ years of age (68.2 {\%}). Approximately 50.3 {\%} reported injecting drugs in the past 30 days. We estimate approximately 8829 (95 {\%} CI 4899 and 12,759) PWID in DC. When adjusted for possible missed sub-populations of PWID, the estimate increases to 12,000; thus, the original estimate of approximately 9000 should be viewed in the context of the 95 {\%} confidence interval. These evidence-based estimations should be used to determine program delivery needs and resource allocation for PWID in Washington, DC.",
keywords = "Capture-recapture, HIV, Population estimation, PWID",
author = "Ruiz, {Monica S.} and Allison O’Rourke and Allen, {Sean Travis}",
year = "2016",
month = "2",
day = "1",
doi = "10.1007/s10461-015-1085-z",
language = "English (US)",
volume = "20",
pages = "363--368",
journal = "AIDS and Behavior",
issn = "1090-7165",
publisher = "Springer New York",
number = "2",

}

TY - JOUR

T1 - Using Capture-Recapture Methods to Estimate the Population of People Who Inject Drugs in Washington, DC

AU - Ruiz, Monica S.

AU - O’Rourke, Allison

AU - Allen, Sean Travis

PY - 2016/2/1

Y1 - 2016/2/1

N2 - No current estimates exist for the size of the population of people who inject drugs (PWID) in the District of Columbia (DC). The WHO/UNAIDS Guidelines on Estimating the Size of Populations Most at Risk to HIV was used as the methodological framework to estimate the DC PWID population. The capture phase recruited harm reduction agency clients; the recapture phase recruited community-based PWID. The 951 participants were predominantly Black (83.9 %), male (69.8 %), and 40+ years of age (68.2 %). Approximately 50.3 % reported injecting drugs in the past 30 days. We estimate approximately 8829 (95 % CI 4899 and 12,759) PWID in DC. When adjusted for possible missed sub-populations of PWID, the estimate increases to 12,000; thus, the original estimate of approximately 9000 should be viewed in the context of the 95 % confidence interval. These evidence-based estimations should be used to determine program delivery needs and resource allocation for PWID in Washington, DC.

AB - No current estimates exist for the size of the population of people who inject drugs (PWID) in the District of Columbia (DC). The WHO/UNAIDS Guidelines on Estimating the Size of Populations Most at Risk to HIV was used as the methodological framework to estimate the DC PWID population. The capture phase recruited harm reduction agency clients; the recapture phase recruited community-based PWID. The 951 participants were predominantly Black (83.9 %), male (69.8 %), and 40+ years of age (68.2 %). Approximately 50.3 % reported injecting drugs in the past 30 days. We estimate approximately 8829 (95 % CI 4899 and 12,759) PWID in DC. When adjusted for possible missed sub-populations of PWID, the estimate increases to 12,000; thus, the original estimate of approximately 9000 should be viewed in the context of the 95 % confidence interval. These evidence-based estimations should be used to determine program delivery needs and resource allocation for PWID in Washington, DC.

KW - Capture-recapture

KW - HIV

KW - Population estimation

KW - PWID

UR - http://www.scopus.com/inward/record.url?scp=84958176325&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84958176325&partnerID=8YFLogxK

U2 - 10.1007/s10461-015-1085-z

DO - 10.1007/s10461-015-1085-z

M3 - Article

C2 - 25963771

AN - SCOPUS:84958176325

VL - 20

SP - 363

EP - 368

JO - AIDS and Behavior

JF - AIDS and Behavior

SN - 1090-7165

IS - 2

ER -