Table 1. Associations of Demographic and Tumor Characteristics to Molecular Subtype.
| Luminal A | Luminal B | Luminal HER2 | HER2 | TNBC | P | |
|---|---|---|---|---|---|---|
| ER/PR+, HER2−, Ki67 < 14% | ER/PR+, HER2−, Ki67 ≥ 14% | ER/PR+, HER2+ | ER/PR−, HER2+ | ER/PR−, HER2− | ||
| Age | < 0.001 | |||||
| < 50 | 55 (56) | 67 (64) | 19 (52) | 12 (36) | 18 (40) | |
| 50–65 | 35 (36) | 25 (24) | 16 (43) | 21 (64) | 25 (56) | |
| > 65 | 8 (8) | 12 (12) | 2 (5) | 0 (0) | 2 (4) | |
| Histology | 0.159 | |||||
| IDC | 90 (31) | 97 (33) | 36 (12) | 31 (11) | 38 (13) | |
| Others | 8 (23) | 7 (32) | 1 (5) | 2 (8) | 7 (32) | |
| Pathology grade | < 0.001 | |||||
| I | 14 (67) | 6 (29) | 0 (0) | 1 (4) | 0 (0) | |
| II | 75 (40) | 75 (40) | 15 (8) | 15 (8) | 8 (4) | |
| III | 9 (8) | 23 (21) | 22 (20) | 17 (16) | 37 (34) | |
| Tumor size | 0.001 | |||||
| 10 mm | 14 (52) | 10 (37) | 1 (4) | 0 (0) | 2 (7) | |
| 10–20 mm | 48 (44) | 35 (32) | 9 (8) | 7 (6) | 11 (10) | |
| > 20 mm | 30 (21) | 50 (34) | 22 (15) | 19 (13) | 25 (17) |
Unless otherwise specified, data are numbers of masses, with percentages in parentheses. ER = estrogen receptor, HER2 = human epithelial growth factor receptor 2, IDC = invasive ductal carcinoma, PR = progesterone receptor, TNBC = triple-negative breast cancer