Content validity and inter-rater reliability of the Comprehensive Quality of Life Scale

Abstract

The aim of this study was to assess the psychometric properties of the Comprehensive Quality of Life Scale, Objective Version. Content validity was obtained using Aiken’s V coefficient with the participation of 10 experts and inter-rater reliability was assessed with a sample of 45 participants from 15 families with presence of an intellectual disabled. The results showed insufficient validity in the criteria of clarity, consistency and relevance. The inter-observer reliability was moderate with an overall coefficient of .58. A new version of the scale was obtained for intellectual disabled persons, adapted to the sociocultural characteristics of Lima, Perú.

Keywords

• Calidad de Vida
• discapacidad intelectual
• validez de contenido
• confiabilidad
• rehabilitación