Evaluating the predictive value of the CALLY index for MACE events in STEMI patients: a comparative analysis across admission and discharge time points

The primary outcome indicated that high levels of the CALLY index at 24 h post-PCI (threshold = 0.77) were significant independent prognostic factors for long-term MACEs among STEMI patients (hazard ratio,0.303; 95% confidence interval, 0.207-0.445; P < 0.001). Among the evaluated variables, the CALLY index at 24 h post-PCI exhibited the highest accuracy in predicting MACEs in STEMI patients during long-term follow-up (AUC: 0.712, P < 0.001). Furthermore, the CALLY index at 24 h post-PCI was significantly associated with no-reflow phenomenon (P = 0.006) and Gensini score (P < 0.001), demonstrating its relationship with coronary disease severity and reperfusion quality.