Statistical analysis
Continuous variables are expressed as the mean ± SD or median and
interquartile range, while categorical variables are reported as numbers
and percentages. Comparisons were made using the Mann–Whitney U-test
and Wilcoxon signed-rank tests. Logistic regression analysis was also
used to evaluate GH occurrence. A P-value of 0.10 was required for entry
into the model, and a stepwise method was used to detect any predictors.
Statistical significance was set at P<0.05. All analyses were
performed using EZR software (Saitama Medical Center, Jichi Medical
University, Saitama, Japan), a graphical user interface for R (The R
Foundation for Statistical Computing, Vienna, Austria).