Table 2.

Clinicopathological characteristics and Pearson chi square test of 80 CRC cases for expression of PRDX1 by IHC analysis

Variable	Cases	PRDX1
		Up-regulated	Down- or un-regulated	P Valuea
Gender
Male	44	35	9	0.707
Female	36	24	12
Age
> 60	47	34	13	0.842
≤ 60	33	22	11
Location
Colon	22	12	10	0.130
Sigmoid	23	19	4
Rectum	35	29	6
Pathological grade (differentiated)
Well	4	3	1	0.274b
Moderately	37	31	6
Poor	39	24	15
Lymph nodes invasion
Positive	27	25	2	0.014*
Negative	53	32	19
TNM stage
I	11	8	3	0.032*
IIa	26	23	3
IIb	20	10	10
III	23	16	7

^aPearson chi square.

^bCorrectional χ² tests by combining cells having “Expected Count” less than 5.

^*P < 0.05.