Statistical Analyses
SPSS 18.0 (SPSS, Inc, Chicago, Illinois) was used statistically for analysis. Kolmogorov-Smirnov test evaluated the distribution of continuous variables. Student’s t test for continuous variables was used to analyze the differences between main groups. In addition, univariate and multivariate logistic regression analyzes were performed to evaluate the relationship between myocardial blushing grade and fragmented QRS, ST segment resolution, and TIMI frame count. In the stepwise multivariate regression analysis (Backward, Wald), the effect size was adjusted for all variables with a univariate significance level of <0.2. Adjusted odds ratios (OR) are presented with 95% CIs. Continuous variables were expressed as mean + standard deviation and categorical variables were expressed as percentages. Two-tailed P values <0.05 were considered statistically significant.