Continuous variables were presented as mean ± standard deviation (SD) and categorical variables as the number of patients (percentages). The one way analysis of variance (ANOVA) was used for comparing continuous variables. Additionally, post-hoc analysis was performed for evaluating to be significant by ANOVA. The Pearson's chi-square test or Fisher's exact test was used for analyzing categorical variables. Linear regression analysis was performed for investigating the association between NLR and variables using clinical, laboratory, echocardiographic, and angiographic data. A p value <0.05 was regarded statistically significant. All statistical analyses were carried out with SPSS version 19.0 (SPSS inc., Chicago, Illinois, USA).