Statistical analysis
Continuous data were expressed as Mean ± SD. The normality of data was analyzed using the Kolmogorov-Smirnoff test. Independent sample t-test and chi-square tests were used for bivariate analysis. P value 0 < 0.05 was considered to be statistically significant. The statistical software IBM SPSS Statistics for Windows version 22.0 (IBM Corp. Released 2013, Armonk, New York) was used for the statistical analysis.