Desenvolvimento e avaliação das propriedades psicométricas da versão brasileira do Addiction Severity Index 6 (ASI-6) Light Development and evaluation of psychometric properties of the Brazilian version of Addiction Severity Index 6 (ASI-6) Light

aBStraCt objective: To develop and evaluate the psychometric properties of a shortened Brazilian version of the Addiction Severity Index 6 (ASI-6 Light), previously proposed from a valida-tion study of the instrument constructs and developing new scores for each instrument area based on the Item Response Theory (IRT). Methods: Two hundred subjects were in-terviewed, 100 with the abuse of alcohol and other drugs and 100 without problematic use. The scores of individuals were calculated from the Item Response Theory. The psychometric properties were evaluated by the correlation between the scores of the ASI-6 Light and Alco -hol, Smoking and Substance Involvement Screening Test (ASSIST), the gold standard study. The sensitivity and specificity rates were calculated. esults: A high correlation between r 1 Universidade Federal de Juiz de Fora (UFJF), Departamento de Psicologia, Centro de Referencia em Pesquisa, Intervencao e Avaliacao em Alcool e Outras Drogas. 2 UFJF, Faculdade de Medicina. Endereco para correspondencia: Laisa Marcorela Andreoli SartesCampus Universitario, Instituto de Ciencias HumanasRua Jose Lourenco Kelmer, s/nE-mails: laisa.sartes@gmail.com; laisa.sartes@ufjf.edu.br