Table 1.

Comparison of the basic conditions of the two groups of patients (n, x̅ ± sd)

Items	Control group (n=64)	Observation group (n=64)	t/χ2	P
Age (years)	44.7±5.7	45.2±5.4	0.532	0.596
Average weight (kg)	58.26±3.74	58.63±3.69	0.684	0.403
Gender
Male	30	33	0.281	0.868
Female	34	31
Whether you have high blood pressure
Yes	33	32	0.031	0.860
No	31	32
Whether you have diabetes
Yes	33	30	0.281	0.868
No	31	34
Obesity
Normal	11	12	0.041	0.840
Obesity	25	24
Mild obesity	16	17
Severe obesity	12	11
Orthopedic surgery grade
Grade I	12	13	0.041	0.840
Grade II	24	25
Grade III	17	16
Grade IV	11	10
Whether to routinely use preventive antibiotics
Yes	32	33	0.031	0.860
No	32	31
Operation time (h)	2.85±1.22	2.93±1.18	0.562	0.471
Intraoperative blood loss (mL)	61.53±4.15	61.77±4.09	0.184	0.821
Intraoperative blood transfusion (mL)	62.15±5.65	61.89±5.61	0.245	0.831