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Reliability of the Dutch Pediatric Evaluation of Disability Inventory (PEDI)

Institute for the Study of Education and Human Development, Utrecht University, The Netherlands

Jan WH Custers

Department of Pediatric Physical Therapy, University Medical Centre/Children's Hospital Utrecht, The Netherlands

Joop J Hox

Adri Vermeer

Institute for the Study of Education and Human Development, Utrecht University, The Netherlands

Paul JM Helders

Department of Pediatric Physical Therapy, University Medical Centre/Children's Hospital Utrecht, The Netherlands

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.

Design: 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.

Subjects: 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.

Clinical Rehabilitation, Vol. 17, No. 4, 457-462 (2003)
DOI: 10.1191/0269215503cr634oa


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