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Table 3 Associations of hormone receptor expression with clinico-pathological features, DNA ploidy and outcome measures using two IHC methods and different cut-off values for positivity

From: Clinical relevance of the reappraisal of negative hormone receptor expression in breast cancer

Variables	ER expression			PR expression
	(P values)			(P values)
	Previous method	Current method	Current method	Previous method	Current method	Current method
	(>10%)	(≥1%)	(>10%)	(>10%)	(≥1%)	(>10%)
Grade of differentiation
G1 vs. G2+G3	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
Tumour size
pT1 vs. pT2+pT3	0.017	<0.001	<0.001	0.003	<0.001	<0.001
Nodal status
pN0 vs. pN1	NS	NS	NS	NS	NS	NS
DNA ploidy
Diploid vs. Aneuploid	0.001	<0.001	<0.001	0.021	<0.001	0.002
Disease recurrence
No vs. Yes	NS	NS	NS	0.032	NS	0.008
Death from the disease
No vs. Yes	NS	NS	NS	0.010	NS	<0.001

ER Estrogen receptors, PR Progesterone receptors.

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