Statistical Analysis
All statistical analyses were performed using Statistical Package for
Social Sciences volume 22.0 (IBM Corp.; IL, Chicago, USA).
Non-parametric tests were used for parameters that have been shown
difference from the normal distribution. The parameters with normal
distribution was analyzed by parametric tests. The variables with
continuous normally distributed were expressed as mean ± SD. The
categorical variables were presented as percentage and the variables
without normally distributed were expressed as median and interquartile
ranges (IQRs).