2.6. Statistical Analysis
Data were analyzed using SPSS version 25.0 (IBM Corp., Armonk, NY, USA). Continuous data were inspected and tested for distribution using the Shapiro–Wilk test. Normally distributed data were analyzed by ANOVA to compare the three groups (the GA group, the PVB group, and the RIB group) with differences in the outcome parameters. Normally distributed data are presented as mean ± standard deviation. Numerical data of the two groups were compared using the Student's 