Table 1 Baseline socio-demographic and clinical characteristics of patients included in this study (n = 1019)
Characteristics | Number of patients | Frequency, % |
|---|---|---|
Age, mean ± SD, year | 52.1 ± 8.8 |  |
Education level | ||
 High school or below | 868 | 85.2 |
 Collage or above | 151 | 14.8 |
Marital status | ||
 Married or cohabitating | 728 | 71.4 |
 Unmarried or divorced or widowed | 291 | 28.6 |
Household income (HKD/month) | ||
  < 15,000 | 463 | 45.4 |
 15,000-30,000 | 326 | 32.0 |
 30,000-50,000 | 151 | 14.8 |
  ≥ 50,000 | 79 | 7.8 |
Employment status | ||
 Full time | 378 | 37.1 |
 Part time | 129 | 12.7 |
 Not working | 512 | 50.2 |
Menopausal status | ||
 Pre-menopausal | 539 | 52.9 |
 Post-menopausal | 480 | 47.1 |
BMI at diagnosis, kg/m2 | ||
 Underweight (< 18.5) | 37 | 3.6 |
 Normal (18.5–22.9) | 488 | 47.9 |
 Overweight (23–24.9) | 209 | 20.5 |
 Obese (≥25) | 285 | 28.0 |
Number of comorbidities | ||
 None | 629 | 61.7 |
 1 | 259 | 25.4 |
 2 | 101 | 9.9 |
 ≥ 3 | 30 | 2.9 |
AJCC stage at diagnosis | ||
 0-I | 375 | 36.9 |
 II | 471 | 46.2 |
 III | 169 | 16.6 |
 Missing | 4 | 0.4 |
Histology | ||
 IDC | 858 | 84.2 |
 ILC | 31 | 3.0 |
 DCIS | 56 | 5.5 |
 Others | 74 | 7.3 |
ER status | ||
 Positive | 763 | 74.9 |
 Negative | 233 | 22.9 |
 Missing | 23 | 2.3 |
PR status | ||
 Positive | 598 | 58.7 |
 Negative | 395 | 38.8 |
 Missing | 26 | 2.6 |
HER 2 status | ||
 Positive | 274 | 26.9 |
 Negative | 686 | 67.3 |
 Missing | 59 | 5.8 |
Surgery | ||
 Mastectomy | 628 | 61.6 |
 Conservation | 391 | 38.4 |
Chemotherapy | ||
 Yes | 774 | 76.0 |
 No | 245 | 24.0 |
Radiotherapy | ||
 Yes | 721 | 70.8 |
 No | 298 | 29.2 |
Endocrine therapy | ||
 Yes | 777 | 76.3 |
 No | 242 | 23.7 |
Smoking status | ||
 Yes | 11 | 1.1 |
 No | 1008 | 98.9 |
Drinking status | ||
 Yes | 15 | 1.5 |
 No | 1004 | 98.5 |