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. Author manuscript; available in PMC: 2011 Dec 1.

Published in final edited form as: Oral Oncol. 2010 Oct 14;46(12):880–887. doi: 10.1016/j.oraloncology.2010.09.005

Table 1.

Spearman rank test analyses of the tissue microarray staining

	EP1	EP2	EP3	COX-2	p53	EGFR
EP1	-	n= 278 p<0.0001^***	n= 280 p<0.0001^***	n= 178 p = 0.0264^*	n= 168 p= 0.1067	n= 244 p= 0.9020
EP2	-	-	n= 274 p= 0.0126^*	n= 180 p= 0.0504	n= 160 p= 0.0560	n= 235 p= 0.6446
EP3	-	-	-	n= 181 p= 0.1702	n= 162 p= 0.1325	n= 240 p= 0.6798
COX-2	-			-	n= 137 p= 0.6700	n= 312 p= 0.0025^**
p53	-				-	n= 254 p= 0.1633

^*

p <0,05

^**

p<0,001

^***

p<0,001; n = pair numbers