| Stage of cancer; no. (%) of patients | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| All stages n = 2927 | Stage 0 n = 424 | Stage I n = 1118 | Stage II n = 938 | Stage III n = 233 | Stage IV n = 123 | Unknown n = 91 | ||||||||
| Initial surgery | ||||||||||||||
| None | 121 | (4) | 1 | (<1) | 7 | (1) | 13 | (1) | 22 | (9) | 65 | (53) | 13 | (14) |
| Breast-conserving | 1510 | (52) | 281 | (66) | 726 | (65) | 445 | (47) | 34 | (15) | 22 | (18) | 2 | (2) |
| Mastectomy | 1086 | (37) | 104 | (25) | 344 | (31) | 458 | (49) | 154 | (66) | 22 | (18) | 4 | (4) |
| Unknown | 210 | (7) | 38 | (9) | 41 | (4) | 22 | (2) | 23 | (10) | 14 | (11) | 72 | (79) |
| Radiotherapy | ||||||||||||||
| Within 1 yr of diagnosis | 1649 | (56) | 159 | (38) | 655 | (59) | 599 | (64) | 179 | (77) | 57 | (46) | 0 | (0) |
| Within 5 yr of diagnosis | 1715 | (59) | 167 | (39) | 679 | (61) | 619 | (66) | 184 | (79) | 65 | (53) | 1 | (1) |
| Within 1 yr of breast-conserving surgery* | 1214 | (80) | 155 | (55) | 639 | (88) | 394 | (89) | 26 | (76) | NA | NA | ||
| Chemotherapy | ||||||||||||||
| Within 1 yr of diagnosis | 928 | (32) | 0 | (0) | 159 | (14) | 543 | (58) | 166 | (71) | 53 | (43) | 7 | (8) |
| Within 5 yr of diagnosis | 978 | (33) | 0 | (0) | 177 | (16) | 558 | (59) | 168 | (72) | 61 | (50) | 14 | (15) |
| Hormone therapy | ||||||||||||||
| Within 1 yr of diagnosis (all) | 1664 | (57) | 95 | (22) | 709 | (63) | 610 | (65) | 156 | (67) | 63 | (51) | 31 | (34) |
| Within 5 yr of diagnosis (all patients) | 1773 | (61) | 109 | (26) | 734 | (66) | 657 | (70) | 169 | (73) | 67 | (54) | 37 | (41) |
| Within 1 yr of diagnosis (ER+) | 1493 | (78) | 7 | (23) | 695 | (74) | 590 | (83) | 143 | (87) | 52 | (83) | 6 | (50) |
Note: ER+ = estrogen receptor-positive, NA = not applicable (use of radiotherapy after breast-conserving surgery is not relevant for patients with stage IV or unknown stage cancer). *Percentages calculated on the basis of number who had breast-conserving surgery.