Table 1.

Patient characteristics

Characteristic	Immunostaining cohort n (total = 141)	qRTPCR cohort n (total = 100)
Histology
invasive ductal	121	85
others	20	15
Grade
G1	22	14
G2	58	44
G3	61	42
Size
T1	63	44
T2	74	53
T3	3	2
unknown	1	1
Nodal status
+	51	39
-	67	49
unknown	23	12
Vascular invasion
present	60	41
absent	81	59
ERα1
+	98	70
-	43	30
PgR1
+	69	53
-	72	47
ERβ2 protein
high2	100	72
low	41	19
ERβ2 mRNA
high2	49	34
low	51	30

¹ data from O'Neill et al. [9]

² based on ROC-derived cut-points