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  • Title: The Cleveland adolescent sleepiness questionnaire: a new measure to assess excessive daytime sleepiness in adolescents.
    Author: Spilsbury JC, Drotar D, Rosen CL, Redline S.
    Journal: J Clin Sleep Med; 2007 Oct 15; 3(6):603-12. PubMed ID: 17993042.
    Abstract:
    STUDY OBJECTIVE: Developed the Cleveland Adolescent Sleepiness Questionnaire (CASQ), a brief, self-completed instrument to measure excessive daytime sleepiness in adolescents. DESIGN: Cross-sectional analysis. PARTICIPANTS: A subsample of 411 adolescents 11-17 years of age recruited from area schools, churches, and "control" participants in a sleep disordered breathing cohort study; a second subsample of 62 adolescents with diagnosed sleep disordered breathing also participating in the sleep disordered breathing study. MEASUREMENTS: Participants completed the CASQ along with two other available measures of daytime sleepiness and other sleep parameters (sleep duration on school nights, sleep duration on non-school nights, and sleep debt, defined as non-school night sleep duration minus school-night sleep duration). Demographic information was obtained from a caregiver-completed questionnaire. The CASQ was developed using exploratory factor analysis, followed by confirmatory factor analysis using structural equation modeling techniques. RESULTS: Goodness-of-fit measures for the final 16-item scale structure ranged from good to excellent. The CASQ's internal consistency was good (alpha = 0.89). Correlations between the CASQ, two other measures of daytime sleepiness, and sleep parameters gave preliminary evidence of the CASQ's construct validity. CONCLUSION: The CASQ shows promise as a valid measure of daytime sleepiness in adolescents.
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