Table 1. Distribution of molecular subtypes in the young and old breast cancer patients.

	Young		Old
		N	%	N	%
Luminal A type	48	24.5	78	34.4
Luminal B type	95	48.5	105	46.3
Her-2 overexpression type	17	8.7	20	8.8
TNBC type	36	18.4	24	10.6
Total	196	100	227	100