Table 2.

Concordance between biopsy and surgical specimen for oestrogen receptor, progesterone receptor and Ki-67. ER, oestrogen receptor, PR, progesterone receptor

Biopsy	Surgical specimen		Total
ER	+	−
+	820	9	829
–	11	83	94
PR
+	742	17	759
−	36	128	164
Ki-67
+	235	21	256
−	107	560	667