Table 1. Clinicopathologic characteristic of each subtype.
| Tumor subtype | ||||
|---|---|---|---|---|
| Characteristics | Basal-like (n = 33) |
Luminal (n = 57) |
HER2 (n = 24) |
p value* |
| Age (y) | ||||
|
| ||||
| Mean (±SD) | 52.1 (11.1) | 55.4 (11.6) | 48.0 (12.5) | 0.021 |
|
| ||||
| Median (range) | 51 (30–82) | 58 (26–75) | 46 (30–75) | |
|
| ||||
| Tumor size | ||||
|
| ||||
| Mean (±SD) | 24.6 (11.4) | 21.7 (9.4) | 27.2 (11.7) | 0.091 |
|
| ||||
| Median (range) | 22 (11–60) | 18 (8–53) | 23.5 (14–58) | |
|
| ||||
| Grade [n (%)] | ||||
|
| ||||
| 1 | 2 (6.1) | 13 (22.8) | 1 (4.2) | 0.0004 |
|
| ||||
| 2 | 5 (15.1) | 25 (43.9) | 8 (33.3) | |
|
| ||||
| 3 | 26 (78.8) | 19 (33.3) | 15 (62.5) | |
|
| ||||
| Stage [n (%)] | ||||
|
| ||||
| I | 8 (24.2) | 20 (35.1) | 5 (20.8) | 0.494 |
|
| ||||
| II | 19 (57.6) | 28 (49.1) | 12 (50.0) | |
|
| ||||
| III | 6 (18.2) | 9 (15.8) | 7 (29.1) | |
*
p value obtained using the nonparametric Kruskal-Wallis test for continuous data and exact chi-square test for categorical data.