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