Statistical Analysis
Statistical analysis was preformed using IBM SPSS Statistics software
version 25 (IBM Corporation, Armonk, US). Continuous data with normal
distribution was reported as mean and SD, while non-normally distributed
data was presented as median and interquartile range. Variance analysis
(ANOVA) was used to compare quantitative data among the three treatment
groups with subsequent Bonferrnoi pairwise comparisons. Chi-square test
and Fisher’s exact test were used to analyze qualitative variables. In
Fisher’s exact test, Bonferrnoi correction was used for adjusting
significance limit to P<0.017, while significance was defined
as P<0.05 for other tests.