Table 1.
Baseline patient characteristics
| Variable | n (%) |
|---|---|
| Age | |
| < 50 | 303 (58.5) |
| ≥ 50 | 215 (41.5) |
| Menopausal status | |
| Pre-menopausal | 221 (42.7) |
| Peri/post-menopausal | 297 (57.3) |
| Height (cm) | |
| Mean ± SD | 162.0 ± 6.9 |
| Median (IQR) | 162.0 (157, 166.3) |
| Weight (kg) | |
| Mean ± SD | 66.8 ± 13.5 |
| Median (IQR) | 64.1 (57.8, 73.0) |
| Body mass index (kg/m2) | |
| ≤ 25 | 283 (54.6) |
| 25–30 | 150 (29.0) |
| > 30 | 85 (16.4) |
| Hormone receptor expression | |
| Either ER or PR positive/equivocal | 370 (71.4) |
| Both ER and PR negative | 75 (14.5) |
| Missing | 73 (14.1) |
| Tumour stage | |
| T1 | 290 (56.0) |
| T2 | 167 (32.2) |
| T3 | 25 (4.8) |
| TX | 36 (7.0) |
| Nodal status | |
| Negative | 362 (69.9) |
| Positive | 156 (30.1) |
| Tumour grade | |
| 1 | 77 (14.9) |
| 2 | 216 (41.7) |
| 3 | 181 (34.9) |
| Missing | 44 (8.5) |
| Surgery type | |
| Mastectomy | 117 (22.6) |
| Lumpectomy | 401 (77.4) |
| Adjuvant chemotherapy | |
| No | 315 (60.8) |
| Yes | 203 (39.2) |
| Adjuvant hormonal therapy | |
| No | 318 (61.4) |
| Yes | 200 (38.6) |
| Adjuvant radiation | |
| No | 138 (26.6) |
| Yes | 380 (73.4) |