2.6. Statistical Analysis
pain
The acquired data were entered into a spreadsheet, and statistical analysis was performed using SPSS software version 22 (IBM Corp, Armont, NY, USA). Demographic data and the pre-operative pain score were compared between the groups using the Chi-square test of proportion for the categorical and Analysis of Variance for the continuous variable. To compare the pre-operative pain score between the groups, the Kruskal–Wallis test was applied. To compare post-operative pain within the group at different time intervals, the Chi square test of proportion was done and for intergroup comparison, the Kruskal–Wallis test was conducted. All statistical analyses were done at the 95% Confidence Interval and 