The Comprehensive Complication Index in Ulcerative Colitis: A Comparison with the Clavien-Dindo Classification

Area of Science:

• Surgical outcomes research
• Gastroenterology
• Health services research

Background:

• The Comprehensive Complication Index (CCI) is a novel system for evaluating postoperative complications by weighting their severity.
• The Clavien-Dindo Classification (CDC) is a widely used system for grading surgical complications.

Purpose of the Study:

• To compare the predictive performance of the CCI and CDC in patients undergoing surgery for ulcerative colitis (UC).
• To assess the utility of the CCI as an indicator of prolonged length of stay (LOS) in UC patients.

Main Methods:

• A retrospective analysis of patients who underwent initial surgery for UC between April 2012 and March 2020.
• Patients were categorized into groups based on length of stay (LOS >30 days vs. LOS ≤30 days).
• Multivariate logistic regression models incorporating CCI and CDC were used to identify risk factors for LOS >30 days. Receiver Operating Characteristic (ROC) curve analysis compared the predictive accuracy (Area Under the Curve - AUC) of both models.

Main Results:

• The overall rate of LOS >30 days was 20.2% (119/588 patients).
• In the CCI model, age, ASA score ≥3, and CCI were significant independent risk factors for LOS >30 days.
• The CCI model demonstrated a significantly higher AUC (0.86) compared to the CDC model (0.82) for predicting LOS >30 days (p=0.02).

Conclusions:

• The Comprehensive Complication Index (CCI) is a more effective measure of length of stay than the Clavien-Dindo Classification (CDC) in patients with ulcerative colitis.
• The CCI serves as a valuable indicator for predicting prolonged hospital stays and assessing outcomes in UC surgery.