Citation

Lopes P, Prieto G, Delgado AR. Addict. Behav. 2014; 39(10): 1500-1503.

Affiliation

Universidad de Salamanca, Spain.

Copyright

(Copyright © 2014, Elsevier Publishing)

DOI

10.1016/j.addbeh.2014.05.014

PMID

24954444

Abstract

INTRODUCTION: A high degree of self-efficacy is required from drug users if they are to adopt long-term abstinence-maintaining or harm-reducing behaviors. Our objective was to analyze the psychometric quality of the Harm Reduction Self-Efficacy Questionnaire (HRSEQ) with the Rating Scale Model (RSM), an extension of the Rasch Model for polytomous items.

METHODS: Participants were 419 drug dependents from both harm reduction low threshold methadone program and therapeutic community programs in Portugal (84.5% male).

RESULTS: Greater risk perception was associated with a higher odds of planning to quit within 6months (AOR=1.34, CI.95=1.24, 1.45). Smoking level did not moderate this association (p=.85).

CONCLUSIONS: After recoding the rating scales by collapsing the eleven categories into four, the HRSEQ scores show good model fit and psychometric adequacy.

Language: en