Table II.

Single-factorial survival analysis.

Variable	χ2	P-value
Gender	0.395	0.530
Age	0.079	0.779
Tumor size	2.154	0.142
Vascular invasion	1.009	0.315
CA72-4	15.794	<0.001
Lymphatic node metastasis	9.117	0.003
TNM stage	55.954	<0.001
Invasive depth	47.830	<0.001
TNFAIP8 expression	9.918	0.002

TNFAIP8, tumor necrosis factor-α-induced protein 8; TNM, TNM Classification of Malignant Tumours; CA72-4, carbohydrate antigen 72-4.