Kelsey T Laird1, Amanda L Sherman2, Craig A Smith2, Lynn S Walker2. 1. Department of Psychology and Human Development, Vanderbilt University and Department of Pediatrics, Vanderbilt University lynn.walker@vanderbilt.edu. 2. Department of Psychology and Human Development, Vanderbilt University and Department of Pediatrics, Vanderbilt University.
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.
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.
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