Equivalência de mensuração das versôes em português dos instrumentos CAGE, T-ACE e TWEAK utilizados para rastrear consumo abusivo de álcool em mulheres grávidas.

Abstract

Since it is of great interest to compare epidemiological profiles betweendifferent settings and cultures, epidemiological research programs regarding their cross-cultural adaption are essencial. Using a cross-cultural equivalence model developed in the research area of health-related quality of life, the present article assesses the measurement equivalence between the Portuguese versions and the originals conceived in English of three instruments used to evaluate alcohol abuse and dependence - CAGE, TWEAK and T-ACE - among pregnancy women. An intra-observer reliability evaluation involved 97 replications carried out within a 24-48 hour period. Another 38 were carried out assess inter-observer reliability. With exception of a few instances related to the instrument CAGE, all kappa point-estimates were above 0,76. Cronbach's a used to assess internal consistency ranged from 0,48 to 0,68 (n=774). For the appraisal of construct validity (n=505), the relationship between alcohol abuse and several putative underlying theoretically related dimensions were evaluated. The findings indicate that the version CAGE (score 1), TWEAK (score 2 or 3) and T-ACE cn be recommended for use in the Brazilian context.