Concurrent validity and reliability of the pediatric evaluation of disability inventory-computer adaptive test mobility domain

Pediatr Phys Ther. 2012 Summer;24(2):171-6; discussion 176. doi: 10.1097/PEP.0b013e31824c94ca.


Purpose: To examine concurrent validity, item-specific reliability, and score distributions of the new Pediatric Evaluation of Disability Inventory-Computer Adaptive Test (PEDI-CAT) Mobility domain with the original PEDI Functional Skills (FS) Mobility Scale.

Methods: Thirty-five parents of children with neurodevelopmental disabilities completed the PEDI-CAT on a computer and the paper PEDI FS via interview.

Results: Strength of association between the PEDI-CAT Mobility domain and PEDI FS Mobility Scale scores was good to excellent (r = 0.82; P < .001). Intraclass correlation coefficients ranged from .3390 to 1.000, and agreement ranged from 60% to 100% for 8 specific items. No child had the minimum score on either test, whereas 9 children (26%) had a maximum score on the PEDI FS Mobility Scale.

Conclusions: This study provides evidence for potential users that the concurrent validity, reliability, and score distribution for the PEDI-CAT Mobility domain are adequate for use with children with varied diagnoses and throughout the pediatric age span.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't
  • Validation Study

MeSH terms

  • Adolescent
  • Child
  • Child, Preschool
  • Diagnosis, Computer-Assisted / instrumentation*
  • Diagnosis, Computer-Assisted / standards*
  • Disability Evaluation*
  • Disabled Children / rehabilitation*
  • Female
  • Humans
  • Infant
  • Infant, Newborn
  • Male
  • Mobility Limitation
  • Reproducibility of Results
  • Young Adult