Systematic comparison of Kawasaki disease Z-score formulas: Enhancing diagnostic accuracy and clinical applicability across populations.

This study aims to evaluate the performance of six distinct Z-score formulas in diagnosing coronary artery dilation in Kawasaki disease (KD) patients, with a focus on their clinical applicability across diverse populations. A retrospective analysis was conducted using comparative statistical methods to assess the sensitivity and specificity of each formula. The Kobayashi and Dallaire formulas demonstrated the highest sensitivity in China, particularly in younger patients with prolonged fever duration. Our findings provide evidence-based recommendations for selecting Z-score formulas to optimize diagnostic precision in KD patients.