[Psychosocial determinants of drug users to use a new syringe]. / Déterminants psychosociaux d'utilisateurs de drogues d'utiliser une seringue neuve.

ABSTRACT

BACKGROUND: A limited number of injection drug users are hard to reach through needle-exchange programs. They obtain their injection material from drug-using peers. This dependence on others can make them more at risk of contracting HIV through sharing non-sterile syringes. The aim of this study is to identify determinants of the intention to systematically resort to use of a new syringe by injection drug users rarely or never involved in needle-exchange programs in Quebec. METHODS: A cross-sectional survey was conducted in Québec city by means of a questionnaire measuring variables from the theory of planned behavior and past behavior. Participants (n=97) were recruited by acquaintances who kept regular contacts with the local needle-exchange programs. Multiple linear regression was used to identify the psychosocial determinants of the intention, and beliefs underlying those determinants were identified using multiple logistic regression. RESULTS: Half of participants reported using a new syringe for each injection in the last month. In multivariate analyses, this past behavior together with theory of planned behavior constructs explained 70% of the variation in participants intent to use a new syringe for each injection (control beliefs beta=0.39; past behavior beta=0.27; attitude beta=0.21; perceived behavioral control beta=0.20; subjective norm beta=0.12). In logistic regression, six important beliefs were identified. CONCLUSION: This study resulted in the development of a predictive model of intention to use always a new syringe for each injection among a population of injection drug users in Quebec. Study results could serve as the foundation for the development of interventions to promote this behavior.