Table 1 Breast cancer patient characteristics
|  |  | Patients WITH self-reported tamoxifen treatment n= 3155‡ | †Patients WITHOUT self-reported tamoxifen treatment n= 3485‡ |
|---|---|---|---|
Median age | Â | 53 | 53 |
Age range | Â | 24-69 | 23-69 |
Tumour size group (cm) | *N/A | 913 (13.8%) | 1,275 (19.2%) |
| Â | < 2 | 1,448 (21.8%) | 1,380 (20.8%) |
| Â | 2-5 | 710 (10.7%) | 751 (11.3%) |
| Â | 5+ | 84 (1.3%) | 79 (1.2%) |
Grade | 1 | 670 (10.1%) | 599 (9%) |
| Â | 2 | 1,487 (22.4%) | 1,318 (19.8%) |
| Â | 3 | 560 (8.4%) | 1,019 (15.3%) |
| Â | *N/A | 438 (6.6%) | 549 (8.3%) |
Positive nodes | 0 | 1,606 (24.2%) | 1,476 (22.2%) |
| Â | 1-3 | 603 (9.1%) | 591 (8.9%) |
| Â | 4-9 | 140 (2.1%) | 200 (3%) |
| Â | 10+ | 57 (0.9%) | 78 (1.2%) |
| Â | *N/A | 749 (11.3%) | 1,140 (17.2%) |
Stage | 1 | 1,624 (24.5%) | 1,655 (24.9%) |
| Â | 2 | 1,359 (20.5%) | 1,505 (22.7%) |
| Â | 3 | 99 (1.5%) | 146 (2.2%) |
| Â | 4 | 28 (0.4%) | 50 (0.8%) |
| Â | *N/A | 45 (0.7%) | 129 (1.9%) |
ER | *N/A | 959 (14.4%) | 1,117 (16.8%) |
(oestrogen receptor status) | Negative | 207 (3%) | 668 (10.1%) |
|  | Positive | 1,989 (30%) | §1,699 (25.6%) |
Surgery | Yes | 1,982 (29.8%) | 1,860 (28%) |
| Â | No | 132 (2%) | 220 (3.3%) |
| Â | *N/A | 1,041 (15.7%) | 1,405 (21.2%) |
Chemotherapy | Yes | 587 (8.8%) | 782 (11.8%) |
| Â | No | 1,527 (23%) | 1,298 (19.5%) |
| Â | *N/A | 1,041 (15.7%) | 1,405 (21.2%) |
Person years follow-up | Â | 18,860.38 | 19,189.94 |
a Number of events | Â | 312 | 418 |