Table 1.

	Groups	ITPKA		Pearson χ2	P-value
		High	Low
Gender	Male	27	24	0.40	0.53
	Female	19	22
Age	≤60	17	21	0.72	0.40
	>60	29	25
Differentiation	Well	29	32	0.44	0.51
	Moderate-Poor	17	14
T stage	T1-T2	27	33	3.17	0.08
	T3-T4	13	6
Lymph node*	Negative	13	21	5.67	0.02
	Positive	24	12
TNM stage	I-II	19	22	2.32	0.13
	III-IV	17	9

P<0.05 was considered as significant, *Significant correlation.