Table 1 Characteristics of breast cancer patients by surgery pattern
| Â | Surgery Pattern | |||
|---|---|---|---|---|
| Â | BCS Alone N (%)a | BCS, BCS N (%)a | BCS, Mastectomy N (%)a | Mastectomy N (%)a |
Total Patients | 4572 (39) | 472 (4) | 615 (5) | 5967 (51) |
Stage | ||||
 Stage I | 2920 (51) | 292 (5) | 264 (5) | 2242 (39) |
 Stage II | 1412 (32) | 161 (4) | 267 (6) | 2572 (58) |
 Stage III | 240 (16) | 19 (1) | 84 (6) | 1153 (77) |
Age at Diagnosis | ||||
  < 50 | 1205 (39) | 136 (4) | 227 (7) | 1541 (50) |
 50-59 | 1342 (44) | 150 (5) | 184 (6) | 1380 (45) |
 60-69 | 1088 (42) | 114 (4) | 115 (4) | 1304 (50) |
 70-79 | 676 (34) | 60 (3) | 66 (3) | 1162 (59) |
 80+ | 258 (30) | 12 (1) | 23 (3) | 580 (66) |
Geography of Surgery | ||||
 Calgary | 1954 (44) | 175 (4) | 185 (4) | 2138 (48) |
 Edmonton | 1999 (40) | 206 (4) | 295 (6) | 2468 (50) |
 Central | 192 (23) | 23 (3) | 46 (6) | 563 (68) |
 South | 308 (33) | 36 (4) | 56 (6) | 536 (57) |
 North | 119 (27) | 32 (7) | 33 (7) | 262 (59) |
Surgeon Volume | ||||
 Very High (60+) | 2313 (44) | 223 (4) | 278 (5) | 2485 (47) |
 High (20-59) | 1700 (38) | 172 (4) | 235 (5) | 2370 (53) |
 Medium (13-19) | 362 (33) | 55 (5) | 67 (6) | 623 (56) |
 Low (5-12) | 148 (24) | 16 (3) | 28 (5) | 424 (69) |
 Very Low (< 5) | 49 (39) | 6 (5) | 7 (6) | 65 (51) |
Year of Diagnosis | ||||
 2002-2005 | 2083 (39) | 207 (4) | 296 (6) | 2763 (52) |
 2006-2009 | 2489 (40) | 265 (4) | 319 (5) | 3204 (51) |
Tumor Size | ||||
 T0 | 2 (14) | 1 (7) | 0 (0) | 11 (79) |
 T1 | 3523 (48) | 358 (5) | 373 (5) | 3052 (42) |
 T2 | 997 (28) | 107 (3) | 200 (6) | 2235 (63) |
 T3 | 34 (7) | 5 (1) | 38 (8) | 417 (84) |
 T4 | 16 (6) | 1 (0.4) | 4 (1) | 252 (92) |
Nodal Status | ||||
 N0 | 3551 (47) | 353 (5) | 363 (5) | 3324 (44) |
 N1 | 805 (28) | 102 (4) | 182 (6) | 1789 (62) |
 N2 | 159 (21) | 13 (2) | 43 (6) | 544 (72) |
 N3 | 57 (14) | 4 (1) | 27 (7) | 310 (78) |
ER/PR Status and Hormone Therapy | ||||
 ER/PR positive & received hormone | 3035 (39) | 335 (4) | 431 (6) | 3967 (51) |
 ER/PR positive & no hormone | 737 (44) | 57 (3) | 72 (4) | 807 (48) |
 ER/PR negative | 800 (37) | 80 (4) | 112 (5) | 1195 (55) |
Neo-adjuvant Chemotherapy | ||||
 Not received | 4509 (41) | 454 (4) | 537 (5) | 5571 (50) |
 Received | 63 (13) | 18 (4) | 78 (16) | 403 (81) |
Adjuvant Chemotherapy | ||||
 Not received | 3041 (42) | 307 (4) | 357 (5) | 3540 (49) |
 Received | 1531 (35) | 165 (4) | 258 (6) | 2428 (55) |