Table 4.

Blood routine before and after the operation (x̅ ± sd)

Group	Observation group (n=38)	Control group (n=38)	t	P
Hb (g/L)
Before the operation	130.03±10.99	128.87±11.84	0.443	0.659
48 h after the operation	128.99±12.48	101.49±15.55*	8.502	<0.001
RBC (×1012/L)
Before the operation	4.40±0.40	4.44±0.39	0.390	0.698
48 h after the operation	4.38±0.43	3.89±0.30*	5.761	<0.001
WBC (×109/L)
Before the operation	5.96±0.94	5.89±1.03	0.309	0.758
48 h after the operation	8.89±1.22*	10.94±1.30*	7.088	<0.001
Hct (%)
Before the operation	40.09±2.22	40.76±2.38	1.269	0.208
48 h after the operation	39.33±3.94	34.40±3.75*	5.587	<0.001

Note: Hb: hemoglobin; RBC: red blood cell count; WBC: white blood cell count; Hct: hematocrit.

Compared with the same group before the operation;

^*P<0.05.