An Item Analysis of the Instability of Parent Report Scores on the Pediatric Evaluation of Disability Inventory

  • Author / Creator
    Worth, Melanie Susan
  • Purpose: To evaluate item instability of the Pediatric Evaluation of Disability Inventory – Functional Skills Scale completed by parents. Methods: Scoring instability was analyzed between baseline and after 6 months of intervention (T1-T2) on 113 children and between end of intervention and 3 months afterwards (T2-T3) on 101 children. Results: Scoring instability was present among children between T1-T2 (19% of children > 5 unstable items) and between T2-T3 (34% of children > 5 unstable items). Ten or more children had unstable scores between both time periods for 21 out of 132 (16%) items. More instability was found between T2-T3, among older children in T1-T2, and among children with less motor limitations in T2-T3. Conclusions: Item instability was present, but the magnitude was low. Suggestions for parental scoring on the PEDI-FSS include clarifying the scoring reference, the subjective words, the guidelines for multi-faceted items, and the impact of the outdoor environment.

  • Subjects / Keywords
  • Graduation date
    Fall 2012
  • Type of Item
  • Degree
    Master of Science
  • DOI
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.