Expression and Genetic Polymorphisms of ERCC1 in Chinese Han Patients with Oral Squamous Cell Carcinoma

Table 1

Clinical characteristics of OSCC patients and controls.

Characteristics	OSCC patients ()	Normal controls ()	value
Age (year)
<60	49 (43.4)	100 (54.3)	0.074
≥60	64 (56.6)	84 (45.7)
Gender (, %)
Male	78 (69.0)	96 (53.2)	0.005
Female	35 (31.0)	88 (46.8)
Smoking status
Never	52 (46.0)	98 (53.3)	0.234
Ever	61 (54.0)	86 (46.7)
Drinking status
Never	75 (66.4)	148 (80.4)	0.009
Ever	38 (33.6)	36 (19.6)
TNM stage
I/II	53
III/IV	60
Lymph node metastasis
Negative	109
Positive	4