2.6. Statistical Analysis
SPSS 22.0 was applied for analyzing the data in this research. The measurement data (time to first exhaust, time to return to normal body temperature, time to get out of bed, and length of hospital stay) were tested using Shapiro–Wilk normality test and Bartlett's homogeneity test for variance. All the measurement data were confirmed to have homogeneity of variance and obeyed approximate normal distribution, then expressed as mean ± standard deviation (