Abstract

The Oviedo Sleep Questionnaire (COS) assesses sleep disorders like insomnia and hypersomnia. However, there are no Latin America studies confirming the two-factor structure obtained in previous research. Objective: To analyze and confirm the two-factor structure of the COS and estimate its psychometric properties. Method: The COS and the Depression, Anxiety, and Stress Scales (DASS-21) were applied to a sample of 601 Chilean university students. Confirmatory factor analysis and correlations between the COS and DASS-21 subscales were performed. Results: The two-factor structure is replicated, obtaining reasonable adjustment indicators and adequate reliability. Evidence of validity was provided based on the moderate associations between the COS and the Dass-21. Conclusions: the factorial structure is confirmed, and an instrument with valid, reliable evidence is obtained. Thus, this instrument can contribute to the diagnosis of sleep disorders in young people.