Reliability of the Dutch Pediatric Evaluation of Disability Inventory (PEDI).
OBJECTIVE
To evaluate the reliability of the Dutch version of the Pediatric Evaluation of Disability Inventory (PEDI), an instrument for measuring functional status (capability and performance in self-care, mobility and social function) of young children using parent interviews.


METHODS
Inter-interviewer reliability was studied after scoring audiotaped interviews by a second researcher. For test-retest reliability the same parent was interviewed twice within three weeks; in inter-respondent reliability both parents of a child were interviewed independently within a few days. On item level, percentage identical scores were computed, and on scale level intraclass correlation coefficients (ICC) and Cronbach's alphas were calculated.


METHODS
Parents of 63 nondisabled and 53 disabled (various diagnosis) children aged between 7 and 88 months were interviewed.


RESULTS
On scale level, all ICCs were above 0.90 and Cronbach's alpha was 0.89 for the self-care domain, 0.74 for the mobility domain and 0.87 for the social function domain. On item level for the Functional Skills Scale, the mean percentage identical scores varied from 89 to 99, and for the Caregiver Assistance Scale from 54 to 90. Different scores between interviewers resulted partially from ambiguous interpretation of the item and/or the explanation.


CONCLUSIONS
Although small adaptations have to be made, the psychometric properties of the Dutch PEDI are found to be good.
Wassenberg-Severijnen
Jeltje E
JE
Institute for the Study of Education and Human Development, Utrecht University, Faculty of Social Sciences, M&S, PO Box 80140, 3508 TC Utrecht, The Netherlands. J.Wassenberg@fss.uu.nl
Custers
Jan W H
JW
Hox
Joop J
JJ
Vermeer
Adri
A
Helders
Paul J M
PJ
D000203:Activities of Daily Living; D002648:Child; D002675:Child, Preschool; D019988:Children with Disabilities / Q000145:classification*; D005260:Female; D006801:Humans; D008297:Male; D019957:Motor Skills Disorders; D009426:Netherlands; D010287:Parent-Child Relations; D011594:Psychometrics; D015203:Reproducibility of Results; D012648:Self Care; D012720:Severity of Illness Index; D012919:Social Behavior; D011795:Surveys and Questionnaires