4.7. Statistical Analyses

We analyzed the data using IBM SPSS software package version 20.0. (Armonk, NY, USA: IBM Corp). Continuous data were tested for normality with the Kolmogorov–Smirnov and Shapiro–Wilk tests. Quantitative outcomes are described as ranges (minimum and maximum), means, standard deviations, and medians for normally distributed quantitative variables. The Student’s t-test was utilized to correspond to the two groups. Furthermore, for non-normally distributed quantitative variables, the Mann–Whitney U test was used to compare the two groups. The significance of the obtained results was judged at the 5% level [1].