title: Psychometric Properties of the Canadian Little Developmental Coordination Disorder Questionnaire for Preschool Children.
abstract: OBJECTIVE
  Test the psychometric properties and cut-off scores for the Canadian Little Developmental Coordination Disorder Questionnaire (Little DCDQ), which screens for coordination difficulties in children aged 3 to 4 years.
  
  
  METHODS
  Parents of children with typical development (n = 108) and children at risk for motor problems (n = 245) completed the questionnaire. A subgroup (n = 119) of children was tested with the Movement Assessment Battery for Children-2 (MABC-2) and the Beery-Buktenica Developmental Test of visual-motor integration (VMI) to determine motor impairment (MI).
  
  
  RESULTS
  Test-retest reliability (r = 0.956, p < .001) and internal consistency (Cronbach's alpha = 0.94) were high. Construct validity was supported by a factor analysis and significant difference in scores of children who were typically developing and were at risk. Concurrent validity was evaluated for the children who received standardized motor testing, with significant difference between children with and without MI. Discriminant function analysis showed that all 15 items were able to distinguish the two groups. The questionnaire correlated well with the MABC-2 and VMI. Validity as a screening tool was assessed using logistic regression modeling (X(2)(5) = 25.87, p < .001) and receiver operating curves, establishing optimal cut-off values with adequate sensitivity.
  
  
  CONCLUSIONS
  The Little DCDQ is a reliable, valid instrument for early identification of children with motor difficulties.
authors.affiliation: 1Alberta Children's Hospital and the University of Calgary, Calgary, Alberta, Canada.
authors.forename: Brenda N
authors.initials: BN
authors.lastname: Wilson
authors.forename: Dianne
authors.initials: D
authors.lastname: Creighton
authors.forename: Susan G
authors.initials: SG
authors.lastname: Crawford
authors.forename: Jennifer A
authors.initials: JA
authors.lastname: Heath
authors.forename: Lisa
authors.initials: L
authors.lastname: Semple
authors.forename: Benjamin
authors.initials: B
authors.lastname: Tan
authors.forename: Shannon
authors.initials: S
authors.lastname: Hansen
mesh_terms: D002170:Canada; D016022:Case-Control Studies; D002657:Child Development; D002675:Child, Preschool; D016002:Discriminant Analysis; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D009048:Motor Skills; D019957:Motor Skills Disorders / Q000175:diagnosis*; D011594:Psychometrics; D012372:ROC Curve; D015203:Reproducibility of Results; D018570:Risk Assessment; D011795:Surveys and Questionnaires / Q000592:standards*; D013647:Task Performance and Analysis
keywords: Developmental coordination disorder, DCD, daily living skills; health systems; motor development; psychometric testing; self-care; service delivery