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dc.contributor.authorRoy, Élisefr
dc.contributor.authorVandermeerschen, Jillfr
dc.contributor.authorRicher, Isabellefr
dc.contributor.otherArruda, Nelsonfr
dc.contributor.otherBruneau, Juliefr
dc.date.accessioned2015-11-17T18:43:18Z
dc.date.available2015-11-17T18:43:18Z
dc.date.created2013fr
dc.date.issued2015-11-17
dc.identifierPMID:23182550fr
dc.identifier.urihttp://hdl.handle.net/11143/8050
dc.description.abstractBackground: Effective public health programs aimed at problematic cocaine users are challenged by the fact that they can have complex patterns of drug use with respect to polysubstance use and routes of drug administration. This study was carried out to explore the presence of subgroups of cocaine users on the basis of their concurrent use of opioids and their routes of cocaine and opioid administration, and to determine if subgroups could be differentiated in terms of sociodemographic factors and risk behaviours. Methods: Regular cocaine users (≥ 1 per week) were recruited in low-threshold services located in the Montréal downtown area. The following variables were examined: demographic characteristics, types of drug used, routes of drug administration, and condom use with occasional or commercial sexual partners. Latent class analysis and multinomial logistic regression modeling were carried out. Results: 886 cocaine users were recruited (83.5% male: mean age 35.38 years). A 5-class model was identified: 1) “Cocaine Smokers” (CSs) (n = 161; membership probability (MP) = 0.183); 2) “Cocaine Smokers/Sniffers” (CSSs) (n = 201; MP = 0.218); “Cocaine Injectors” (CIs) (n = 207; MP = 0.231); 4) “Cocaine-Opioid Injectors” (COIs) (n = 277; MP = 0.291); and 5) “Cocaine-Opioid Polyroute users” (COPs) (n = 40; MP = 0.077). Compared with COIs, other subtypes were significantly different in terms of either age, duration of cocaine use, ethnic background, homelessness, polydrug use or condom use. Conclusion: The heterogeneity of consumption patterns supports the importance of offering an array of interventions aimed at problematic cocaine users. These should include the provision of clean injecting and smoking material, the promotion of safe sexual behaviours and the prevention of initiation to drug injection. In the absence of specific treatment, cocaine users should have access to primary health care services and addiction treatment based on innovative behavioral and pharmacological approaches.fr
dc.language.isoengfr
dc.relation.isformatofdoi:10.1016/j.drugpo.2012.10.004fr
dc.relation.ispartofISSN:0955-3959fr
dc.relation.ispartofInternational journal on drug policyfr
dc.rightsAttribution - Pas d’Utilisation Commerciale - Pas de Modification 2.5 Canada*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/2.5/ca/*
dc.subjectCocaine usersfr
dc.subjectCocaine and opioid co-usefr
dc.subjectStreet-involvedfr
dc.subjectLatent class analysisfr
dc.titlePatterns of cocaine and opioid co-use and polyroutes of administration among street-based cocaine users in Montréal, Canadafr
dc.typeArticlefr
udes.description.typestatusPost-publicationfr
udes.description.typepubRévisé et accepté par des pairsfr
udes.description.pages1-21fr
udes.description.period24(2)fr
udes.description.diffusionDiffusé par Savoirs UdeS, le dépôt institutionnel de l'Université de Sherbrookefr
dc.identifier.bibliographicCitationRoy, É., Richer, I., Arruda, N., Vandermeerschen, J., Bruneau, J. (2013). Patterns of cocaine and opioid co-use and polyroutes of administration among street-based cocaine users in Montréal, Canada. International journal on drug policy, 24(2), 142-149. doi:10.1016/j.drugpo.2012.10.004. Epub 2012 Nov 23.fr
udes.description.sourceInternational journal on drug policyfr
udes.autorisation.depottruefr
udes.description.ordreauteursRoy, Élise; Richer, Isabelle; Arruda, Nelson; Vandermeerschen, Jill; Bruneau, Julie


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Attribution - Pas d’Utilisation Commerciale - Pas de Modification 2.5 Canada
Except where otherwise noted, this document's license is described as Attribution - Pas d’Utilisation Commerciale - Pas de Modification 2.5 Canada