Table 1 Patient characteristics in Hong Kong (HKBC) dataset
|  | HKBC (N = 196) |
|---|---|
Characteristic | N (%) |
Age, year | Â |
 < 50 | 37 (18.9) |
 50–60 | 58 (29.5) |
 ≥ 60 | 101 (51.6) |
BMIa, kg/m2 | Â |
 < 25 | 95 (55.2) |
 25–30 | 55 (32.0) |
 ≥ 30 | 22 (12.8) |
Age at menarche, year | Â |
 < 14 | 100 (54.1) |
 ≥ 14 | 85 (45.9) |
Parity | Â |
 Nulliparous | 17 (9.1) |
 Parous | 169 (90.9) |
Age at first birth, yearb | Â |
 < 25 | 61 (38.6) |
 ≥ 25 | 97 (61.4) |
Menopausal status | Â |
 Pre | 43 (23.2) |
 Post | 142 (76.8) |
Age at menopause, yearc | Â |
 ≤ 50 | 63 (53.4) |
 > 50 | 55 (46.6) |
PAM50d | Â |
 Luminal A | 70 (41.2) |
 Luminal B | 51 (30.0) |
 HER2-enriched | 28 (16.5) |
 Basal | 21 (12.3) |
Clinical stage | Â |
 I/II | 91 (85.1) |
 III/IV | 16 (14.9) |
TP53 mutation status | Â |
 No | 124 (72.1) |
 Yes | 48 (27.9) |