Data CHOD (n = 24) Placebo (n = 24) Statistic P
Sex ratio (M:F) 17∕7 17∕7 X2 = 0.000 1.000
Age (years) 63.38 ± 9.07 62.58 ± 10.22 t = 0.516 0.476
Height (cm) 165.29 ± 8.77 166.25 ± 8.14 t = 0.127 0.723
Weight (kg) 64.6 ± 10.4 63.8 ± 10.3 t = 0.051 0.823
Body mass index (kg/m2) 23.64 ± 2.80 2.91 ± 3.19 t = 0.858 0.359
NRS grade     X2 = 0.820 0.574
1~2 17 14    
3~4 7 10    
5~6 0 0    
ASA classification     X2 = 0.202 0.904
I 8 9    
II 12 12    
III 4 3    
> III 0 0    
Liver function Child state     X2 = 0.762 0.666
A 20 22    
B 4 2    
C 0 0    
Duration of surgery (min) 165.38 ± 33.31 151.83 ± 34.29 t = 0.023 0.881
Intraoperative blood loss (ml) 248.75 ± 76.0 225.83 ± 87.52 t = 0.516 0.476
Intraoperative fluid transfusion (ml) 1495.83 ± 295.59 514.58 ± 344.99 t = 0.442 0.510
NRS: Nutritional Risk Screening; ASA: The United States before surgery anesthesiologist association risk classification
Table 1: Patient demographics and surgical characteristics.