Statistical Analysis
Our data were analyzed by using the SPSS 23.0 Statistics Package (SPSS Inc, Chicago, Ill, USA). The variables were expressed as percentage, numeric variables, and mean ± standard deviation. The Student t-test was used to compare normally distributed variables, and the Mann-Whitney U-test was used to compare the variables that did not show normal distribution. The Chi-Square test or Fisher’s Exact Chi-Square test were used to compare categorical variables. The risk factors that affected the PoAF development were identified with univariable and multivariate logistics regression analysis. The sensitivity and specificity of AEMD in showing PoAF development was evaluated with the Receiver Operating Characteristic (ROC) Analysis. Intra-observer agreement was assessed 20 randomly selected patients by analyzing the echocardiographic data measured (AEMD parameters, two times in different time) by the same operator, using Pearson’s correlation coefficients. The statistical significance level was taken as p < 0.05 in all assessments. 10 randomly