Table 3.

p16 expression in papillary urothelial carcinoma according to grade.

			p16				Total
			Negative	Weak Nuclear	Moderate Nuclear	Strong Nuclear
Grade	High grade	Count	9	0	7	3	19
		% within Grade	47.4%	0.0%	36.8%	15.8%	100.0%
		% within p16	69.2%	0.0%	100.0%	33.3%	63.3%
		% of papillary	30.0%	0.0%	23.3%	10.0%	63.3%
	Low grade	Count	4	1	0	6	11
		% within Grade	36.4%	9.1%	0.0%	54.5%	100.0%
		% within p16	30.8%	100.0%	0.0%	66.7%	36.7%
		% of papillary	13.3%	3.3%	0.0%	20.0%	36.7%
Total		Count	13	1	7	9	30
		% within Grade	43.3%	3.3%	23.3%	30.0%	100.0%
		% within p16	100.0%	100.0%	100.0%	100.0%	100.0%
		% of papillary	43.3%	3.3%	23.3%	30.0%	100.0%

p value = 0.02.