title: [Psychometric performance of the 6th version of the Addiction Severity Index in Spanish (ASI-6)].
abstract: This work analysed the psychometric properties of the 6th version of the Addiction Severity Index (ASI-6) translated and adapted to the Spanish language. A multicentre, observational and prospective design was used. A total of 258 participants were included, 217 were patients (35 stable patients and 182 unstable patients), and 41 were controls. The results show satisfactory psychometric performance of the ASI-6. The degree of the internal consistency of the standardized objective scores ranged between .47 and .95. As for test-retest reliability, the values were acceptable, varying from .36 to 1. The study of the internal structure revealed a good fit to a unidimensional solution for all scales taken independently. Regarding convergent-discriminant validity, the correlations between the primary and secondary scales of the ASI-6 and the Clinic Global Impression score were low, with values from .01 to .26. Likewise, 8 of the 15 scales differentiated between controls and unstable patients. The psychometric properties of the ASI-6 Spanish version seem to be acceptable, though it is necessary to carry out new studies to test metric quality with independent samples of patients.
authors.affiliation: Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM) - Universidad de Oviedo, Oviedo, Spain. evamdmesa@gmail.com
authors.forename: Eva M
authors.initials: EM
authors.lastname: Díaz Mesa
authors.forename: Paz
authors.initials: P
authors.lastname: García-Portilla
authors.forename: Pilar A
authors.initials: PA
authors.lastname: Sáiz
authors.forename: Teresa
authors.initials: T
authors.lastname: Bobes Bascarán
authors.forename: María José
authors.initials: MJ
authors.lastname: Casares
authors.forename: Eduardo
authors.initials: E
authors.lastname: Fonseca
authors.forename: Eduardo
authors.initials: E
authors.lastname: Carreño
authors.forename: Gerardo
authors.initials: G
authors.lastname: Flórez
authors.forename: Josep
authors.initials: J
authors.lastname: Guardia
authors.forename: Enriqueta
authors.initials: E
authors.lastname: Ochoa
authors.forename: César
authors.initials: C
authors.lastname: Pereiro
authors.forename: Gabriel
authors.initials: G
authors.lastname: Rubio
authors.forename: Antonio
authors.initials: A
authors.lastname: Terán
authors.forename: José Ramón
authors.initials: JR
authors.lastname: Fernández Hermida
authors.forename: Julio
authors.initials: J
authors.lastname: Bobes
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D011446:Prospective Studies; D011594:Psychometrics; D012720:Severity of Illness Index; D019966:Substance-Related Disorders / Q000523:psychology*; D011795:Surveys and Questionnaires