title: Initial validation of the SLEEP-50 questionnaire.
abstract: Initial psychometric properties of the SLEEP-50 questionnaire, designed to detect sleep disorders as listed in the Diagnostic and Statistical Manual of Mental Disorders (4th ed., Text Revision), were examined. The sample consisted of 377 college students, 246 sleep patients, 32 nightmare sufferers, and 44 healthy volunteers. The internal consistency was high (Cronbach's alpha = .85); test-retest correlations fell between .65 and .89. Principal component analysis with a direct oblimin rotation revealed a factor structure that closely matched the designed structure. Sensitivity and specificity scores were promising for all sleep disorders; the agreement between all clinical diagnoses and SLEEP-50-classifications was substantial (kappa = .77). These initial findings indicate that the SLEEP-50 seems able to detect a variety of sleep disorders. The SLEEP-50 can aid in screening for common sleep disorders in the general population.
authors.affiliation: Department of Clinical Psychology, Utrecht University, The Netherlands. v.i.spoormaker@fss.uu.nl
authors.forename: Victor I
authors.initials: VI
authors.lastname: Spoormaker
authors.forename: Ingrid
authors.initials: I
authors.lastname: Verbeek
authors.forename: Jan
authors.initials: J
authors.lastname: van den Bout
authors.forename: Ed C
authors.initials: EC
authors.lastname: Klip
mesh_terms: D000293:Adolescent; D000328:Adult; D039721:Diagnostic and Statistical Manual of Mental Disorders; D004325:Dreams / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D009426:Netherlands; D017286:Polysomnography; D011594:Psychometrics / Q000706:statistics & numerical data; D012016:Reference Values; D015203:Reproducibility of Results; D012893:Sleep Wake Disorders / Q000145:classification / Q000175:diagnosis* / Q000523:psychology; D013334:Students / Q000523:psychology; D011795:Surveys and Questionnaires