The baseline features were well balanced between your two groups . Treatment The procedure used frequently for early revascularization was primary PCI . Only 3.5 percent of patients underwent immediate bypass surgery or initial PCI with subsequent bypass surgery. No revascularization was performed in 3.2 percent of the individuals . Concomitant treatments and medications are shown in Table S1 in the Supplementary Appendix. The median duration of intraaortic balloon pump support was 3.0 days . Secondary and Primary End Points One individual in the IABP group was misplaced to follow-up before thirty days, and 1 patient in the control group withdrew consent; therefore, 300 individuals in the IABP group and 298 in the control group were included in the evaluation of the principal end point.Statistical Analysis The sample size of 400 was calculated based on a hypothesis of 50 percent efficacy, around infection rate of 20 percent in the placebo group, and an attrition rate of 20 percent, by using a two-sided type I mistake of 5 percent. The estimated rate of infection in the placebo group was predicated on a previous observational study in the same human population.0031 and 0.0197, respectively.19,20 Vaccine efficacy was calculated on the basis of infection rates per 100 person-years of follow-up; 95 percent confidence intervals were based on the Poisson precise technique.21 The chi-square check or Fisher’s exact check was used to compare prices. Cox proportional-hazards modeling was utilized to assess the relative risk of acquiring CMV infections, after adjustment for potential confounders.