Statistical analysis
Data analysis using SPSS19.0 software.Measurement data consistent with a
normal distribution are expressed asx ± s , and comparison
between groups is made witht -tests. For statistical analysis, the
Kruskal-Wallis test wasused for paired numeric data, the
Mann-WhitneyUtest forunpaired numeric data, and the chi-squared test for
categorical variables.AP -value lower than 0.05 by
two-tailedanalysis was accepted as statistically significant.