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Short pediatric Crohn's disease activity index for quality improvement and observational research
Michael D Kappelman1, Wallace V Crandall, Richard B Colletti
1Department of Pediatrics, University of North Carolina at Chapel Hill, North Carolina, USA. michael_kappelman@med.unc.edu
Insights
A new Short Pediatric Crohn's Disease Activity Index (PCDAI) is a practical tool for assessing pediatric Crohn's disease activity. This validated index aids in quality improvement and observational research for pediatric inflammatory bowel disease.
Area of Science:
- Pediatric gastroenterology
- Clinical trial methodology
- Biostatistics
Background:
- Assessing pediatric Crohn's disease (CD) activity requires practical, objective instruments for research and quality improvement.
- Existing indices like the Pediatric Crohn's Disease Activity Index (PCDAI) and Abbreviated PCDAI (APCDAI) have limitations in feasibility.
- Development of a more streamlined and effective assessment tool is needed.
Purpose of the Study:
- To evaluate the feasibility of completing the PCDAI and APCDAI in clinical practice.
- To develop a Short PCDAI by selecting and reweighting the most practical and informative components of the original index.
- To assess the validity and practicality of the newly developed Short PCDAI.
Main Methods:
- Physicians in the ImproveCareNow Collaborative recorded PCDAI components and Physician Global Assessment (PGA) during patient visits.
- Feasibility was determined by the proportion of visits with recorded data for each index and component.
- A Short PCDAI was created using components completed in at least 80% of visits, with reweighted factors.
- The Short PCDAI's feasibility and ability to correlate with PGA were statistically evaluated.
Main Results:
- The full PCDAI and APCDAI were completed in only 16.7% and 44.1% of visits, respectively.
- A Short PCDAI, comprising well-being, pain, stools, weight, abdominal exam, and extraintestinal manifestations, was completed in 66.5% of visits.
- The Short PCDAI demonstrated a strong correlation with PGA (r = 0.60), comparable to the full PCDAI (r = 0.61).
Conclusions:
- The Short PCDAI is a feasible and valid instrument for measuring pediatric Crohn's disease activity.
- This simplified index can enhance the efficiency of quality improvement initiatives.
- The Short PCDAI is suitable for use in observational research involving pediatric IBD patients.
Background:
Practical and objective instruments to assess pediatric Crohn's disease (CD) activity are required for observational research and quality improvement. The objectives were: 1) to determine the feasibility of completing the Pediatric Crohn's Disease Activity Index (PCDAI) and the Abbreviated PCDAI (APCDAI); and 2) to create a Short PCDAI by retaining and reweighting the most practical and informative components.
Methods:
Physicians in the ImproveCareNow Collaborative for pediatric inflammatory bowel disease (IBD) were asked to record components of the PCDAI and assign a Physician Global Assessment (PGA) of disease severity at each patient encounter. We assessed the feasibility of the PCDAI, the APCDAI, and the individual index components by determining the proportion of visits in which data were recorded. We created a short index by retaining and reweighting components of the PCDAI completed in ≥80% of visits. The feasibility of the Short PCDAI and its ability to discriminate between PGA categories were evaluated using descriptive statistics.
Results:
This study population included 1355 subjects with CD (6373 visits). The PCDAI and APCDAI were complete in 16.7% and 44.1% of visits, respectively. A Short PCDAI, including general well-being, abdominal pain, stools, weight, abdominal exam, and extraintestinal manifestations were completed in 66.5% of visits. The correlation between the Short PCDAI and PGA was similar to that of the PCDAI (r = 0.60, P < 0.001 versus 0.61, P < 0.001).
Conclusions:
The Short PCDAI is a practical and valid tool to measure pediatric CD activity. Its use should facilitate quality improvement and observational research.
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