2.5. Data Analysis
REGRESSION
The data were statistically analyzed using SPSS 20.0 software. Descriptive statistics were used for qualitative variables. Ratios, mean, standard deviation (SD), median, and interquartile range (IQR) were used for quantitative variables. The association was assessed by univariate and multivariable logistic regression analysis, OR, 95% confidence interval (CI). We compared ratios using the chi-squared test. The results were statistically significant when the 