Reliability and validity of the Spanish version of the substance dependence severity scale.

Purpose: The purpose of this study was to estimate the reliability and provide evidence for the validity of the Spanish version of the Substance Dependence Severity Scale (SDSS).

Methods: A total of 211 substance abusers recruited at a public center that provides treatment for substance-related disorders in an outpatient setting were assessed. Reliability was estimated by Cronbach's α and test-retest.

[Spanish adaptation of the Substance Dependence Severity Scale: preliminar results].

The Substance Dependence Severity Scale -SDSS- is one of the few scales that assesses substance dependence and abuse according DSM criteria in dimensional terms. Several studies have provided evidence of psychometric validity and reliability in its English version, but there is no Spanish version available. The aim of this work was to describe the adaptation process of the English version of the SDSS into Spanish, and provide preliminary results on its reliability and validity evidence.