Table 1 Patient characteristics
Description | Patients without chemotherapy | Patients with chemotherapy | Pvaluea | All patients |
|---|---|---|---|---|
Number | 180 | 85 | Â | 265 |
Age, years | Â | Â | Â | Â |
   Median (range) | 60 (34, 81) | 49 (25, 70) |  | 56 (25, 81) |
   ≥ 50 | 143 (79%) | 42 (49%) | < 0.0001 |  |
Tumor grade | Â | Â | 0.040 | Â |
   1 | 53 (29%) | 13 (15%) |  | 66 (25%) |
   2 | 101 (56%) | 55 (65%) |  | 156 (59%) |
   3 | 26 (14%) | 17 (20%) |  | 43 (16%) |
Tumor size | Â | Â | Â | Â |
   Mean (standard deviation) | 1.4 (0.9) | 2.2 (1.4) |  | 1.7 (1.2) |
   ≥ 2 cm | 32 (18%) | 45 (53%) | < 0.0001 | 77 (29%) |
Radiation treatment | Â | Â | 0.5073 | Â |
   Yes | 150 (83%) | 68 (80%) |  | 218 (82%) |
   No | 30 (17%) | 17 (20%) |  | 47 (18%) |
Recurrence event | Â | Â | 0.199 | Â |
   No recurrence | 137 (76%) | 66 (78%) |  | 203 (77%) |
   Locoregional/Contralateral recurrence | 12 (7%) | 1 (1%) |  | 13 (5%) |
   Distant recurrence | 25 (14%) | 16 (19%) |  | 41 (15%) |
   Second primary | 6 (3%) | 2 (2%) |  | 8 (3%) |
Median (range) follow-up, years | 10.2 (2.3, 18.0) | 10.3 (2.9, 17.3) | Â | 10.3 (2.3, 18.0) |
Breast cancer-specific death events | 21 (12%) | 9 (11%) | Â | 30 (11%) |
All-cause death events | 29 (16%) | 11 (13%) | Â | 40 (15%) |