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

Abstract

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.

Conflict of interest statement

Conflict of Interest Statement: Dr. Haley and Mr. Moed own founders stock in CREcare, LLC, which distributes the PEDI-CAT products.

Figures

Figure 1. Plots of individual cases for each domain illustrates the difference in scores between the groups of children with and without disabilities

Note: Figure by permission, PEDI-CAT Manual, Copyright Boston University Trustees.

Figure 1. Plots of individual cases for each domain illustrates the difference in scores between the groups of children with and without disabilities

Note: Figure by permission, PEDI-CAT Manual, Copyright Boston University Trustees.