Statistical analysis
The collected data was tabulated in an Excel sheet and statistically analyzed using SPSS Version 18 (SPSS Inc., Chicago, IL, USA). Data was expressed in terms of mean and standard deviation [mean (SD)] or frequencies and percentages [n (%)] when appropriate. The data was explored for normality by checking the data distribution and using the Kolmogorov–Smirnov and Shapiro–Wilk tests. Comparisons between groups with respect to normally distributed numeric variables were compared by a one-way analysis of variance (ANOVA) test, followed by a Tukey’s post hoc test when ANOVA revealed a significant difference. A comparison between different observations was performed using the repeated measure ANOVA test. Qualitative variables were expressed as numbers and percentages and were compared using the chi square test. A Pearson’s correlation was also performed. A 