Table 5. Relationship between ERα, ERβ and other histopathological variables.

Factor	ERα IHC	ERα RT–PCR	ERβIHC	ERβ RT–PCR
Stage	low P=0.019	low P=0.014	n.s.	n.s.
	(MW) n=160	(MW) n=127	(CS, MW) n=138	(CS, MW) n=127
Grade	low P<0.0005	low P<0.0005	n.s.	n.s.
	(MW) n=160	(MW) n=127	(CS, MW) n=138	(CS, MW) n=127
Size	n.s.	n.s.	larger P=0.076*	larger P=0.025
	(CS, MW) n=158	(CS, MW) n=125	(MW) n=136	(MW) n=125
Nodal status	negative P=0.048	negative P=0.057	n.s.	n.s.
	(CS) n=131	(CS) n=108	(CS) n=110	(CS) n=108
Lymphovascular Invasion	n.s.	n.s.	present P=0.067*	present P=0.043
	(CS, MW) n=159	(CS) n=126	(CS) n=137	(CS) n=126
PgR	positive P<0.0005	positive P<0.0005	n.s.	positive P=0.056
	(MW) n=146	(CS) n=110	(CS, MW) n=138	(CS) n=110
Ki67	low P<0.0005	low P<0.0005	high P=0.034	n.s.
	(MW) n=141	(CS) n=108	(MW) n=133	(CS, MW) n=108

Statistical test used was chi-square (CS), Mann-Whitney (MW); n.s.=not significant.

^*using a cut-off of 60% positive cells for ERβ1.