Statistical methods
All statistical analyses were done using Microsoft Excel 2019 (Microsoft Corporation, NY, USA) and IBM SPSS (Statistical Package for the Social Science; IBM Corp, NY, USA) version 25 for Microsoft Windows. Numerical data were statistically described as mean ± standard deviation (± SD), median, and range, while qualitative (categorical) data were described in frequencies (number of cases) and percentages. Student’s t-test was used to compare the numerical variables between the study groups, while Chi-square (χ2) or Exact test was used to compare the categorical data. A probability value (p-value) less than 0.05 was considered statistically significant.