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Appraisal of the pediatric ulcerative colitis activity index (PUCAI)

Dan Turner1, Jeffrey Hyams, James Markowitz

  • 1Pediatric Gastroenterology Unit, Shaare Zedek Medical Center, Jerusalem, Israel. turnerd@szmc.org.il

Inflammatory Bowel Diseases
|January 24, 2009
PubMed

Insights

The Pediatric Ulcerative Colitis Activity Index (PUCAI) is a feasible, valid, and responsive tool for assessing disease activity in children with ulcerative colitis (UC). This index can be utilized as a primary outcome measure in clinical trials and practice.

Area of Science:

  • Pediatric Gastroenterology
  • Clinical Trial Methodology
  • Inflammatory Bowel Disease Research

Background:

  • The Pediatric Ulcerative Colitis Activity Index (PUCAI) is a tool used to assess disease activity in children.
  • Its psychometric performance in real-world settings requires evaluation.

Purpose of the Study:

  • To evaluate the psychometric performance of the PUCAI in a real-life cohort of pediatric patients with ulcerative colitis (UC).
  • To assess the feasibility, validity, and responsiveness of the PUCAI.

Main Methods:

  • A cohort of 215 children with UC was studied over two visits.
  • Validity was assessed using disease activity constructs, and responsiveness was evaluated using distributional and anchor-based strategies.
  • Feasibility was compared to the Pediatric Crohn's Disease Activity Index (PCDAI).

Main Results:

  • The PUCAI demonstrated high feasibility (97.6% completion rate) compared to the PCDAI (47.6%).
  • PUCAI scores were significantly higher in patients requiring medical therapy escalation (45 points) versus those who did not (0 points).
  • The index showed excellent test-retest reliability (ICC=0.89) and responsiveness to change (AUC=0.96).

Conclusions:

  • The PUCAI is a feasible, valid, and responsive index for assessing pediatric UC disease activity.
  • The PUCAI can be effectively used as a primary outcome measure in pediatric UC research and clinical practice.
Abstract

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