Développement et évaluation d'une intervention sur mesure visant à favoriser l'usage d'une seringue neuve à chaque injection chez les usagers de drogues par injection qui fréquentent les programmes d'échange de seringues

Authors: Gagnon, Hélène
Advisor: Godin, Gaston
Abstract: The use of soiled syringes exposes injection drug users (IDUs) to serious infections. To better target objectives of an intervention aimed at promoting the use of a new syringe at each injection, a preliminary study was realized. The use of an integrative theoretical model has permitted to identify factors associated with the intention of IDUs to adopt this behaviour. Only 39% of the 105 respondents had a firm intention to adopt this behaviour in the next week. Perceived behavioural control (OR : 17.83; CI95% 5.75-55.15) and attitude (OR : 13.43; CI95% 3.54-50.87) were the principal factors associated with intention. Intervention mapping served as the conceptual framework to guide the development of the intervention. At each developmental step, this model integrates theory, empirical data and information collected among populations. More specifically, the intervention emerges through a strategy named Computer Tailoring. This strategy uses information technologies to present messages customized according to individual characteristics. This intervention was implemented within the framework of an evaluative research. A two-group randomized control trial design was adopted. Behavioural outcomes were measured at baseline (T0), one week after the intervention (T1) and three months later (T2). A total of 260 IDUs were recruited. At baseline, 52.3% of the participants reported not always using new syringes in the previous week. The analysis showed a short term effect. One month after the implementation of the intervention, participants in the experimental group were using fewer soiled syringes (p = 0.004), and a higher number reported adopting safe behaviour (p = 0.04). These effects were not significant three months later. The results of this study add weight to those already published demonstrating the efficacy of Computer Tailoring intervention to modify behaviour. When they are exposed to tailored educational messages, IDUs who visit needle exchange programs (NEPs) adopt safer injection practices.
Document Type: Thèse de doctorat
Issue Date: 2008
Open Access Date: 13 April 2018
Permalink: http://hdl.handle.net/20.500.11794/20338
Grantor: Université Laval
Collection:Thèses et mémoires

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