approaching significancep = 0.063
Among the covariates, OCT—approaching significance ( p = 0.063)—had a 63% reduction in hazard (HR = 0.370, p = 0.063), indicating a strong protective effect but without reaching significance; age—significant ( p = 0.035)—with Exp (B) = 1.030, suggesting each year in age increases hazard by 3%; female sex—significant with p = 0.042—suggests a protective effect compared to male counterparts; and ‘true’ bifurcation type—significant with p = 0.027—was associated with a significant increase in mortality when compared to simple bifurcations or ostial lesions (HR = 1.787) 4.4.