Table 2 Distribution of HRT use among sporadic breast cancer cases
Patients characteristics | Â | Sporadic breast cancer cases N (%) |
|---|---|---|
HRT use | Â | Â |
| Â | Nonusers: 0 < 1 years | 373 (70.4) |
| Â | Short-term users: 1 < 5 years | 76 (14.3) |
|  | Long-term users: ≥ 5 years | 81 (15.3) |
| Â | Missing | 0 |
Regimen of HRT* | Â | Â |
| Â | Estrogen only | 53 (28.8) |
| Â | Estrogen plus progestin | 131 (71.2) |
| Â | Missing | 2 |