title: Pediatric sleep disorders: exploratory modulation of their relationships.
abstract: OBJECTIVE
  This study explores relationships between clinically encountered sleep problems in children.
  
  
  METHODS
  The Sleep Disturbance Scale for Children (SDSC) (Bruni et al 1996), which screens 26 sleep problems and results in 6 sleep disorder-subscales, was used as core in a larger health-behavior questionnaire (HBQ).
  
  
  METHODS
  Caregivers of 3045 6- to 12-year-olds filled out the HBQ.
  
  
  METHODS
  N/A.
  
  
  RESULTS
  21 SDSC-items plus 15 new sleep items were selected. Via structural equation modelling we explored (1) relations within and between disorder-subscales, (2) relations between the disorder-subscales with 3 indexes added (i.e., sleep efficiency index, sleep environment index, and sleep enuresis) and (3) relations of the disorder-subscales to their categorization: dyssomnia and parasomnia, without and with the indexes.
  
  
  CONCLUSIONS
  The final model had a satisfying fit and approximates the Association of Sleep Disorders Centers' classification. Each disorder-subscale can be applied individually. However, some items are statistically of low value. For that reason, the use as the inference of relations between such items should be cautious. Adding the 3 indexes improved the fit of the model. The complexity of 'sleep enuresis' was especially revealed. For the practicing care provider, as for researchers, the statistical model proposed could be a valuable directive in the diagnostic classification process of pediatric sleep problems.
authors.affiliation: Department of Psychology, Vrije Universiteit Brussel (Free University of Brussels), Belgium. karen.spruyt@vub.ac.be
authors.forename: Karen
authors.initials: K
authors.lastname: Spruyt
authors.forename: Raymond
authors.initials: R
authors.lastname: Cluydts
authors.forename: Gino Benjamin
authors.initials: GB
authors.lastname: Verleye
mesh_terms: D000293:Adolescent; D002648:Child; D006970:Disorders of Excessive Somnolence / Q000175:diagnosis / Q000453:epidemiology; D004775:Enuresis / Q000453:epidemiology; D004777:Environment; D005260:Female; D006304:Health Status; D006801:Humans; D006945:Hyperhidrosis / Q000175:diagnosis / Q000453:epidemiology; D008297:Male; D012720:Severity of Illness Index; D012891:Sleep Apnea Syndromes / Q000175:diagnosis / Q000453:epidemiology; D012893:Sleep Wake Disorders / Q000175:diagnosis* / Q000453:epidemiology / Q000209:etiology; D011795:Surveys and Questionnaires