Table 2 Patient characteristics for women with breast cancer by breast cancer laterality
BC characteristics | BC all, n (%) | BC right, n (%) | BC left, n (%) |
|---|---|---|---|
No. of women | 60,217 (100.0) | 28,903 (100.0) | 30,840 (100.0) |
T status | |||
T0 | 8616 (14.3) | 4224 (14.6) | 4391 (14.2) |
T1 | 28,100 (46.7) | 13,527 (46.8) | 14,289 (46.3) |
T2 | 18,185 (30.2) | 8646 (29.9) | 9390 (30.4) |
T3 | 2810 (4.7) | 1329 (4.6) | 1457 (4.7) |
T4 | 1165 (1.9) | 560 (1.9) | 605 (2.0) |
TX | 1341 (2.2) | 617 (2.1) | 708 (2.3) |
N status | |||
N0 | 33,659 (55.9) | 16,226 (56.1) | 17,155 (55.6) |
N1–3 | 12,799 (21.3) | 6154 (21.3) | 6565 (21.3) |
N4+ | 5993 (10.0) | 2823 (9.8) | 3120 (10.1) |
NX | 7766 (12.9) | 3700 (12.8) | 4000 (13.0) |
ER status | |||
ER+ | 40,168 (66.7) | 19,532 (67.6) | 20,460 (66.3) |
ER− | 8666 (14.4) | 4015 (13.9) | 4587 (14.9) |
Missing | 11,383 (18.9) | 5356 (18.5) | 5793 (18.8) |
PR status | |||
PR+ | 33,335 (55.4) | 16,216 (56.1) | 16,955 (55.0) |
PR− | 14,873 (24.7) | 7033 (24.3) | 7765 (25.2) |
Missing | 12,009 (19.9) | 5654 (19.6) | 6120 (19.8) |
Surgery | |||
No surgery | 2345 (3.9) | 1115 (3.9) | 1212 (3.9) |
BCS | 32,583 (54.1) | 15,873 (54.9) | 16,456 (53.4) |
Mastectomy | 23,917 (39.7) | 11,268 (39.0) | 12,453 (40.4) |
Missing | 1372 (2.3) | 647 (2.2) | 719 (2.3) |
RT stratified for pathological node stage | |||
No RT | 22,790 (37.8) | 10,808 (37.4) | 11,794 (38.2) |
RT N0 | 21,524 (35.7) | 10,472 (36.2) | 10,887 (35.3) |
RT N1–3 | 9088 (15.1) | 4360 (15.1) | 4658 (15.1) |
RT N4+ | 4679 (7.8) | 2219 (7.7) | 2423 (7.9) |
RT NX | 2136 (3.5) | 1044 (3.6) | 1078 (3.5) |
Endocrine therapy | |||
Yes | 36,893 (61.3) | 17,884 (61.9) | 18,867 (61.2) |
No | 23,324 (38.7) | 11,019 (38.1) | 11,973 (38.8) |
Chemotherapy | |||
Yes | 16,552 (27.5) | 7980 (27.6) | 8528 (27.7) |
No | 43,665 (72.5) | 20,923 (72.4) | 22,312 (72.3) |
Trastuzumaba | |||
Yes | 1943 (7.5) | 919 (7.3) | 1024 (7.6) |
No | 23,964 (92.5) | 11,595 (92.7) | 12,368 (92.4) |