Cyclooxygenase-2 expression as a predictor of outcome in colorectal carcinoma

Table 1 Correlation between cyclooxygenase-2 expression and clinicopathological features of colorectal carcinoma

Features	n (%)	COX-2 expression		P value
		Negative	Positive
Sex				0.97
Male	48 (51)	21	27
Female	46 (49)	20	26
Age group (yr)				0.59
< 60	47 (50)	22	25
> 60	47 (50)	19	28
LN involvement				0.07
Yes	60 (64)	22	38
No	34 (36)	19	15
Distant metastasis				0.02
Yes	33 (35)	11	22
No	61 (65)	30	31
Tumor stage				0.01
I/II	32 (34)	20	12
III/IV	62 (66)	21	41
Tumor grade				0.50
Well	25 (27)	11	14
Moderate	56 (60)	26	30
Poor	11 (13)	3	8
Tumor location				0.80
Right colon	38 (40)	16	22
Left colon	56 (60)	25	31
Recurrence				0.22
Yes	31 (33)	11	20
No	38 (40)	19	19
Unknown	25 (27)

LN: Lymph node; COX-2: Cyclooxygenase-2.