title: Psychometric properties of the DCDDaily-Q: a new parental questionnaire on children's performance in activities of daily living.
abstract: Difficulties in the performance of activities of daily living (ADL) are a key feature of developmental coordination disorder (DCD). The DCDDaily-Q was developed to address children's motor performance in a comprehensive range ADL. The aim of this study was to investigate the psychometric properties of this parental questionnaire. Parents of 218 five to eight year-old children (DCD group: N=25; reference group: N=193) completed the research version of the new DCDDaily-Q and the Movement Assessment Battery for Children-2 (MABC2) Checklist and Developmental Coordination Disorder Questionnaire (DCDQ). Children were assessed with the MABC2 and DCDDaily. Item reduction analyses were performed and reliability (internal consistency and factor structure) and concurrent, discriminant, and incremental validity of the DCDDaily-Q were investigated. The final version of the DCDDaily-Q comprises 23 items that cover three underlying factors and shows good internal consistency (Cronbach's α>.80). Moderate correlations were found between the DCDDaily-Q and the other instruments used (p<.001 for the reference group; p>.05 for the DCD group). Discriminant validity of the DCDDaily-Q was good for DCDDaily-Q total scores (p<.001) and all 23 item scores (p<.01), indicating poorer performance in the DCD group. Sensitivity (88%) and specificity (92%) were good. The DCDDaily-Q better predicted DCD than currently used questionnaires (R(2)=.88). In conclusion, the DCDDaily-Q is a valid and reliable questionnaire to address children's ADL performance.
authors.affiliation: Center for Human Movement Sciences, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands. Electronic address: B.W.van.der.Linde@umcg.nl.
authors.forename: Berdien W
authors.initials: BW
authors.lastname: van der Linde
authors.affiliation: Department of Surgery, Hospital Group Twente, Almelo, The Netherlands. Electronic address: Jv.Netten@zgt.nl.
authors.forename: Jaap J
authors.initials: JJ
authors.lastname: van Netten
authors.affiliation: Center for Human Movement Sciences, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands. Electronic address: Egbert.Otten@umcg.nl.
authors.forename: Bert E
authors.initials: BE
authors.lastname: Otten
authors.affiliation: Department for Rehabilitation Medicine, Center for Rehabilitation, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands. Electronic address: K.Postema@umcg.nl.
authors.forename: Klaas
authors.initials: K
authors.lastname: Postema
authors.affiliation: Department of Clinical and Developmental Neuropsychology, University of Groningen, Groningen, The Netherlands. Electronic address: R.H.Geuze@rug.nl.
authors.forename: Reint H
authors.initials: RH
authors.lastname: Geuze
authors.affiliation: Center for Human Movement Sciences, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands. Electronic address: M.M.Schoemaker@umcg.nl.
authors.forename: Marina M
authors.initials: MM
authors.lastname: Schoemaker
mesh_terms: D000203:Activities of Daily Living / Q000145:classification*; D002648:Child; D002675:Child, Preschool; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D019957:Motor Skills Disorders / Q000175:diagnosis* / Q000523:psychology; D011594:Psychometrics / Q000706:statistics & numerical data; D012016:Reference Values; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires
keywords: Activities of daily living; Children; Developmental coordination disorder; Parental questionnaire; Reliability; Validity