The Cleveland adolescent sleepiness questionnaire: a new measure to assess excessive daytime sleepiness in adolescents

J Clin Sleep Med. 2007 Oct 15;3(6):603-12.


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.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Adolescent
  • Adolescent Behavior*
  • Cross-Sectional Studies
  • Disorders of Excessive Somnolence / diagnosis*
  • Female
  • Humans
  • Life Style
  • Male
  • Mental Health
  • Ohio
  • Reproducibility of Results
  • Sleep Deprivation / diagnosis*
  • Students / statistics & numerical data*
  • Surveys and Questionnaires*