Statistical analysis
Analysis of data were done by IBM computer using SPSS (statistical program for social science version 23) as follows: Description of quantitative variables as Mean, SD, median and IQR, Shapiro test of normality used to check the data distribution, Description of qualitative variables as number and percentage, Chi-square test was used to compare qualitative variables between groups, Fisher exact test was used when one expected cell or more are less than 5, and Mann–Whitney test was used instead of unpaired 