title: Drug and HIV-related risk behaviors after geographic migration among a cohort of injection drug users.
abstract: To determine whether migration impacted on drug use and HIV-related risk behaviors among injection drug users (IDU), we identified participants in a prospective cohort of IDU (Vancouver Injection Drug User Study) who had reported migrating out of Greater Vancouver between May 1996 and November 2005. We compared risk behaviors before and after a move for individuals who migrated (movers) and for a similar period for non-movers using linear growth curve analyses. In total, 1,122 individuals were included, including 430 (38.3%) women and 331 (29.5%) Aboriginal participants. Among these, 192 (17.1%) individuals reported migrating out of Greater Vancouver between 1996 and 2005 while 930 (82.9%) did not. Movers were significantly younger than non-movers: 32.0 (Interquartile Range [IQR]: 24.3-39.2) and 34.6 (IQR: 26.9-40.8) respectively. A significant decrease in those reporting unstable housing, frequent heroin and cocaine injection occurred only in movers. Our findings suggest that, in this setting, risk-taking among IDU declines following periods of migration out of Greater Vancouver.
authors.affiliation: British Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, BC, Canada, V6Z 1Y6.
authors.forename: Beth S
authors.initials: BS
authors.lastname: Rachlis
authors.forename: Evan
authors.initials: E
authors.lastname: Wood
authors.forename: Kathy
authors.initials: K
authors.lastname: Li
authors.forename: Robert S
authors.initials: RS
authors.lastname: Hogg
authors.forename: Thomas
authors.initials: T
authors.lastname: Kerr
mesh_terms: D000328:Adult; D000367:Age Factors; D001955:British Columbia / Q000453:epidemiology; D016022:Case-Control Studies; D055030:Drug Users / Q000523:psychology / Q000706:statistics & numerical data*; D004641:Emigration and Immigration / Q000706:statistics & numerical data*; D005260:Female; D005500:Follow-Up Studies; D015658:HIV Infections / Q000453:epidemiology / Q000635:transmission*; D006801:Humans; D008297:Male; D011446:Prospective Studies; D012307:Risk Factors; D012309:Risk-Taking; D015819:Substance Abuse, Intravenous / Q000453:epidemiology / Q000523:psychology*; D014505:Urban Population