Claudia Rafful1,2,3, Ricardo Orozco4, Gudelia Rangel5,6, Peter Davidson1, Dan Werb1,3, Leo Beletsky1,7, Steffanie A Strathdee1. 1. Division of Global Public Health, School of Medicine, University of California, San Diego, CA, USA. 2. School of Public Health, San Diego State University, San Diego, CA, USA. 3. Centre for Urban Health Solutions, St Michael's Hospital, Toronto, Canada. 4. National Institute of Psychiatry, México City, Mexico. 5. Secretariat of Health, Mexico City, Mexico. 6. Mexico-United States Border Health Commission, Mexico City, Mexico. 7. School of Law and Bouvé College of Health Sciences, Northeastern University, Boston, MA, USA.
Abstract
AIM: To assess the effect of involuntary drug treatment (IDT) on non-fatal overdose among people who inject drugs (PWID). DESIGN: Longitudinal study. SETTING: Tijuana, Mexico. PARTICIPANTS: Baseline sample of 671 PWID included 258 (38.4%) women and 413 (61.6%) men. MEASUREMENTS: Primary independent variables were reported recent (i.e. past 6 months) non-fatal overdose event (dependent variable) and IDT. Substance use the day of the non-fatal overdose was also examined. FINDINGS: From 2011 to 2017, 213 participants (31.7%) reported a recent non-fatal overdose and 103 (15.4%) reported recent IDT. Heroin, in combination with methamphetamine and tranquilizers, were the drugs most reported at the day of the event. IDT significantly increased the odds of reporting a non-fatal overdose event [adjusted odds ratio (aOR) = 1.76; 95% confidence interval (CI) = 1.04-2.96]. Odds of non-fatal overdose also increased independently for each additional injection per day (aOR = 1.05; 95% CI = 1.02-1.08), recent tranquilizer use (aOR = 1.92; 95% CI = 1.41-2.61) and using hit doctors (aOR = 1.68; 95% CI = 1.29-2.18) and decreased with age (aOR = 0.97 per year, 95% CI = 0.95-0.99). CONCLUSIONS: Recent involuntary drug treatment in Mexico is a risk factor for non-fatal drug overdose.
AIM: To assess the effect of involuntary drug treatment (IDT) on non-fatal overdose among people who inject drugs (PWID). DESIGN: Longitudinal study. SETTING: Tijuana, Mexico. PARTICIPANTS: Baseline sample of 671 PWID included 258 (38.4%) women and 413 (61.6%) men. MEASUREMENTS: Primary independent variables were reported recent (i.e. past 6 months) non-fatal overdose event (dependent variable) and IDT. Substance use the day of the non-fatal overdose was also examined. FINDINGS: From 2011 to 2017, 213 participants (31.7%) reported a recent non-fatal overdose and 103 (15.4%) reported recent IDT. Heroin, in combination with methamphetamine and tranquilizers, were the drugs most reported at the day of the event. IDT significantly increased the odds of reporting a non-fatal overdose event [adjusted odds ratio (aOR) = 1.76; 95% confidence interval (CI) = 1.04-2.96]. Odds of non-fatal overdose also increased independently for each additional injection per day (aOR = 1.05; 95% CI = 1.02-1.08), recent tranquilizer use (aOR = 1.92; 95% CI = 1.41-2.61) and using hit doctors (aOR = 1.68; 95% CI = 1.29-2.18) and decreased with age (aOR = 0.97 per year, 95% CI = 0.95-0.99). CONCLUSIONS: Recent involuntary drug treatment in Mexico is a risk factor for non-fatal drug overdose.
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