Table 2.

PLS-DA classification results of TNBC, ER, PgR and HER-2 status

	Total b/p	NEG b/p	POS b/p	CV accuracy %	CV Sensitivity %	CV Specificity %	Permutation p-value
TNBC vs TPBC	39/30	26/19	13/11	77.7	80.0	75.4	0.001
ERneg vs ERpos	106/73	41/30	65/43	72.2	76.0	68.5	<0.001
PgRneg vs PgRpos	106/73	59/42	47/31	67.8	74.0	61.6	<0.001
HER-2neg vs HER-2pos	106/73	66/43	40/30	69.1	70.2	68.0	<0.001

b = biopsies/p = patients. PLS-DA: partial least squares discriminant analysis, CV: cross validation.