. 2018 Jul 31;8:290. doi: 10.3389/fonc.2018.00290

Table 1.

Association of XPC expression with tumor differentiation.

	XPC(+)	Total tumors
GRADE
Well differentiated carcinoma	41	56
Moderately differentiated carcinoma	33	53
Poor differentiated carcinoma	27	58
P-value	P^a = 0.151 P^b = 0.004 P^c = 0.071

P^a-value is obtained by comparison between the group of well differentiated carcinoma and the group of moderately differentiated carcinoma; P^b-value is obtained by the comparison between the group of well differentiated carcinoma and the group of poor differentiated carcinoma; P^c-value is obtained by the comparison between the group of moderately differentiated carcinoma and the group of poor differentiated carcinoma.