Fig. 4From: Effects of the concomitant administration of xanthine oxidase inhibitors with zofenopril or other ACE-inhibitors in post-myocardial infarction patients: a meta-analysis of individual data of four randomized, double-blind, prospective studiesCumulative survival without events during 1-year of follow-up in the whole study population and after stratification for propensity score (quintiles, Q), according to presence (+) or absence (−) of concomitant treatment with xanthine oxidase inhibitors XOIs. Data are shown for all treated patients (a) and after excluding patients treated with placebo (b)Back to article page