Table 1.

Correlations between ER:PR-B interactions (signals/cell) and clinicopathological variables

Variable	Spearman’s r	p	N
Age	0.229	0.001	227
Post-menopausal	0.133	0.045	227
T-stage	0.056	0.405	227
N-stage	–0.077	0.247	227
Grade	–0.144	0.030	227
Mitotic score	–0.198	0.003	227
Multiple tumours	–0.039	0.555	227
Mastectomy	–0.056	0.402	227
Axillary clearance	−0.020	0.769	227
Adjuvant chemotherapy	−0.058	0.382	226
Adjuvant radiation	0.019	0.778	224
Adjuvant endocrine therapy	−0.044	0.511	226
ER expression (allred score)	0.567	0.001	227
PR expression (allred score)	0.199	0.003	227
PR-B expression (PLA signals)	0.352	0.001	227

The p value quoted is the result of a 2-tailed Spearman’s correlation. N is the number of patients with pairwise non-missing values