Statistical analysis
Quantitative data were expressed as means and standard deviations (SD). We used the Shapiro–Wilk test as numerical means of assessing normality of the quantitative values. Qualitative data were stated as frequencies (No.) and percentages (%). Independent sample Regarding the sample size, we planned a study of a continuous response variable from matched pairs of study subjects, and we found that at least 48 pairs of subjects were needed to reject the null hypothesis with a probability (power) of 0.99. The type I error probability associated with this test of this null hypothesis is 0.95. We used the “Power and Sample Size Calculations software, version 3.1.2” for this purpose.The interobserver Cohen’s kappa value (