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Low education and living in <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content>iudad <jats:styled-content style=\"fixed-case\">J<\/jats:styled-content>uarez accelerated time to sex work initiation. Being from a southern <jats:styled-content style=\"fixed-case\">M<\/jats:styled-content>exican 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.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Among female sex workers who currently inject drugs in two <jats:styled-content style=\"fixed-case\">M<\/jats:styled-content>exican\u2013<jats:styled-content style=\"fixed-case\">US<\/jats:styled-content> border cities, nearly half appear to initiate sex work prior to beginning to inject, nearly one\u2010third initiate injection drug use before beginning sex work and one\u2010quarter initiate both behaviors concurrently. Predictors of these three trajectories differ, and this provides possible modifiable targets for prevention.<\/jats:p><\/jats:sec>","DOI":"10.1111\/j.1360-0443.2012.04016.x","type":"journal-article","created":{"date-parts":[[2012,7,6]],"date-time":"2012-07-06T12:50:48Z","timestamp":1341579048000},"page":"161-170","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":39,"title":["Factors associated with pathways toward concurrent sex work and injection drug use among female sex workers who inject drugs in northern <scp>M<\/scp>exico"],"prefix":"10.1111","volume":"108","author":[{"given":"Meghan D.","family":"Morris","sequence":"first","affiliation":[{"name":"Division of Global Public Health Department of Medicine University of California San Diego  La Jolla CA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hector","family":"Lemus","sequence":"additional","affiliation":[{"name":"School of Public Health San Diego State University  San Diego CA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karla D.","family":"Wagner","sequence":"additional","affiliation":[{"name":"Division of Global Public Health Department of Medicine University of California San Diego  La Jolla CA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gustavo","family":"Martinez","sequence":"additional","affiliation":[{"name":"SADEC\u2010FEMAP  Ciudad Juarez Chihuahua Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Remedios","family":"Lozada","sequence":"additional","affiliation":[{"name":"Prevencasa A.C.  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