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Addiction. 2013 Jan;108(1):161-70. doi: 10.1111/j.1360-0443.2012.04016.x. Epub 2012 Oct 5.

Factors associated with pathways toward concurrent sex work and injection drug use among female sex workers who inject drugs in northern Mexico.

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1
Division of Global Public Health, Department of Medicine, University of California San Diego, La Jolla, 92093-0507, USA.

Abstract

AIMS:

To identify factors associated with time to initiation of (i) sex work prior to injecting drugs initiation; (ii) injection drug use prior to sex work initiation; and (iii) concurrent sex work and injection drug use (i.e. initiated at the same age) among female sex workers who currently inject drugs (FSW-IDU).

DESIGN:

Parametric survival analysis of baseline data for time to initiation event.

SETTING:

Tijuana and Ciudad Juarez situated on the Mexico-US border.

PARTICIPANTS:

A total of 557 FSW-IDUs aged ≥18 years.

MEASUREMENTS:

Interview-administered surveys assessing context of sex work and injection drug use initiation.

FINDINGS:

Nearly half (n = 258) initiated sex work prior to beginning to inject, a third (n = 163) initiated injection first and a quarter (n = 136) initiated both sex work and injection drug use concurrently. Low education and living in Ciudad Juarez accelerated time to sex work initiation. Being from a southern Mexican state and initiating drug use with inhalants delayed the time to first injection drug use. Having an intimate partner encourage entry into sex work and first injecting drugs to deal with depression accelerated time to initiating sex work and injection concurrently. Early physical abuse accelerated time to initiating sex work and injection, and substantially accelerated time to initiation of both behaviors concurrently.

CONCLUSIONS:

Among female sex workers who currently inject drugs in two Mexican-US border cities, nearly half appear to initiate sex work prior to beginning to inject, nearly one-third initiate injection drug use before beginning sex work and one-quarter initiate both behaviors concurrently. Predictors of these three trajectories differ, and this provides possible modifiable targets for prevention.

PMID:
22775475
PMCID:
PMC3481016
DOI:
10.1111/j.1360-0443.2012.04016.x
[Indexed for MEDLINE]
Free PMC Article
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