Table 1. Patients’ characteristics.

Variable	Cases	HSDL2 expression		χ2	P-value
		Group low	Group high
Gender				1.705	0.205
Male	58	13	45
Female	28	10	18
Age (years)				6.031	0.016
<60	41	16	25
≥60	45	7	38
Grade				4.662	0.047
I/II	36	14	22
III/IV	50	9	41
Lymph node invasion				21.931	<0.001
Non-invasion	39	20	19
Invasion	47	3	44
TNM stage				12.663	0.001
I/II	27	14	13
III/IV	59	9	50