Increased COX-2 Immunostaining in Urothelial Carcinoma of the Urinary Bladder Is Associated with Invasiveness and Poor Prognosis

Table 2

Categories of COX-2 immunostaining in UCB and normal urothelium.

	Primary tumor ()	Normal urothelium ()	value
Low immunostaining	102 (82.9%)	25 (100%)	0.033
High immunostaining	21 (17.1%)	0 (0%)
value	<0.001	<0.001

One sample of the nonparametric chi-squared test; Mann-Whitney test.