表 1. Comparison of general data of patients in the two groups.

两组患者一般资料比较

Index	Control group (n=71)	Observation group (n=72)	t/χ2	P
Average daily cost/CNY,	19.94±7.50	56.27±20.23	15.743	<0.01
Length-of-stay/d,	15.18±2.75	21.35±7.82	6.269	<0.01
Age/yr.,	53.58±10.17	52.74±11.43	0.465	0.643
Sex/case			0.171	0.679
Male	46	49
Female	25	23
Diagnosis/case			2.066	0.356
Oral cancer	60	63
Oropharynx cancer	4	6
Other	7	3
Using anticoagulant drugs/case			0.226	0.634
No	22	25
Yes	49	47