Computer adaptive test performance in children with and without disabilities: prospective field study of the PEDI-CAT

Disabil Rehabil. 2012;34(5):393-401. doi: 10.3109/09638288.2011.607217. Epub 2011 Oct 12.


Purpose: To examine the discriminant validity, test-retest reliability, administration time and acceptability of the pediatric evaluation of disability inventory computer adaptive test (PEDI-CAT).

Methods: A sample of 102 parents of children 3 through 20 years of age with (n = 50) and without (n = 52) disabilities was recruited for this prospective field study. A sub-sample (n = 25) also completed the PEDI-CAT a second time within one month. Parents completed 15 items in each of the four PEDI-CAT domains (daily activities, mobility, social/cognitive, responsibility) using a laptop computer. Following completion, parents answered a four-question user evaluation survey.

Results: PEDI-CAT scores based on parent responses differentiated between groups of children with and without disabilities in all four domains. Test-retest reliability estimates were high (ICC = 0.96-0.99) for all four domains. The mean time to complete 60 items for the full sample (n = 102) was 12.66 minutes (SD = 4.47). Parents reported favorable reactions to the PEDI-CAT.

Conclusions: The PEDI-CAT offers a valid and reliable assessment acceptable to parents.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Activities of Daily Living
  • Adolescent
  • Attitude to Health
  • Child
  • Child, Preschool
  • Diagnosis, Computer-Assisted / methods*
  • Disability Evaluation*
  • Disabled Children*
  • Female
  • Humans
  • Male
  • Parents
  • Pediatrics
  • Prospective Studies
  • Psychological Tests / standards*
  • Psychometrics
  • Reproducibility of Results
  • Time Factors
  • Young Adult