Interestingly, although patients inthe IABP group had more unfavorable baseline clinical characteristics (morefrequent history of MI and HF, higher-level NT-proBNP), Kaplan-Meier curvesshowed a significantly lower cumulative incidence of readmission due to HF in theIABP group during 90-day follow up (Log-rank test: p = 0.002). This evidence concerns the gene NPPB and myocardial infarction.