Table 2.

Classification Rates by Clinical Subtype¹

Gene Set	ER Neg N = 15	ER Pos N = 40	Node Neg N = 25	Node Pos N = 29	Grade 1 N = 7	Grade 2 N = 24	Grade 3 N = 20
PAM	53%	78%	88%	55%	100%	71%	60%
Correlation	60%	80%	92%	59%	100%	83%	55%
Overlap	60%	72%	84%	59%	86%	71%	65%

¹ Correct leave-one-out cross-validation classification rates with gene re-sampling into good and poor outcome groups in 55 tumors