Table 1.
Baseline characteristics of breast cancer patients
| Characteristics | Patients (N = 350) |
|---|---|
| Age (y) | 52.4 ± 12.4 |
| Pathological grade (n/%) | |
| Grade 1 | 76 (21.7) |
| Grade 2 | 251 (71.7) |
| Grade 3 | 23 (6.6) |
| Tumour size (cm) | 3.2 ± 1.6 |
| T stage (n/%) | |
| T1 | 109 (31.1) |
| T2 | 209 (59.7) |
| T3 | 32 (9.2) |
| N stage (n/%) | |
| N0 | 171 (48.9) |
| N1 | 106 (30.3) |
| N2 | 67 (19.1) |
| N3 | 6 (1.7) |
| M stage (n/%) | |
| M0 | 350 (100.0) |
| TNM stage (n/%) | |
| I | 44 (12.6) |
| II | 222 (63.4) |
| III | 84 (24.0) |
| ER status (n/%) | |
| Negative | 137 (39.1) |
| Positive | 213 (60.9) |
| PR status (n/%) | |
| Negative | 172 (49.1) |
| Positive | 178 (50.9) |
| HER2 status (n/%) | |
| Negative | 230 (65.7) |
| Positive | 120 (34.3) |
Data were presented as mean ± standard deviation or count (%).
Abbreviations: ER, estrogen receptor; HER2, human epidermal growth factor receptor 2; PR, progesterone receptor.