borderline significancep<0.10
Multivariable survival analysis was performed with Cox proportional hazard models to appraise the impact of direct stenting technique on the risk of adverse events, by building an enter model including all variables associated with at least borderline significance (p<0.10), as well as other traditionally relevant covariates [thus age, diabetes mellitus, hypercholesterolemia, renal failure, left ventricular ejection fraction (LVEF)<0.35, acute or recent myocardial infarction, multivessel disease, treated lesions, PCI of left main, type B2 or C lesion, total occlusion, bifurcation, calcification, tortuosity, long lesion, small vessel [reference diameter≤2.75 mm], stent diameter, stent length, and post-dilation].