Validation of the Abdominal Pain Index using a revised scoring method
Kelsey T Laird, Amanda L Sherman, Craig A Smith, Lynn S Walker, Kelsey T Laird, Amanda L Sherman, Craig A Smith, Lynn S Walker
Abstract
Objective: Evaluate the psychometric properties of child- and parent-report versions of the four-item Abdominal Pain Index (API) in children with functional abdominal pain (FAP) and healthy controls, using a revised scoring method that facilitates comparisons of scores across samples and time.
Methods: Pediatric patients aged 8-18 years with FAP and controls completed the API at baseline (N = 1,967); a subset of their parents (N = 290) completed the API regarding the child's pain. Subsets of patients completed follow-up assessments at 2 weeks (N = 231), 3 months (N = 330), and 6 months (N = 107). Subsets of both patients (N = 389) and healthy controls (N = 172) completed a long-term follow-up assessment (mean age at follow-up = 20.21 years, SD = 3.75).
Results: The API demonstrated good concurrent, discriminant, and construct validity, as well as good internal consistency.
Conclusion: We conclude that the API, using the revised scoring method, is a useful, reliable, and valid measure of abdominal pain severity.
Keywords: abdominal pain; chronic pain; pain severity; parent report; pediatric pain.
© The Author 2015. Published by Oxford University Press on behalf of the Society of Pediatric Psychology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Source: PubMed