2.6 Statistical analysis
JMP 14 statistical software (SAS Institute Inc., Cary, North Carolina,
USA) was used for the statistical analysis. Continuous parameters were
expressed as the mean ± standard deviation. Two-group comparisons were
analyzed by an unpaired 2-tailed Student’s t test. Categorical
data were expressed as the number (percentage) and were compared using
the Chi-square test. A multiple-group comparison was performed by a
one-way ANOVA followed by the Tukey-Kramer HSD test for a comparison of
the means.
RESULTS