Table 3 Concordance between tissue microarray and slides.

		OR	PR	p53	EMA
Three class scoring system
Concordance			92%	95%
κ			0.81	0.72
Two class scoring system
Concordance		90%	92%	100%	95%
κ		0.78	0.69	1	0.72

EMA, epithelial membrane antigen; OR, oestrogen receptor; PR, progesterone receptor.