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Table 2 Patient characteristics for women with breast cancer by breast cancer laterality

From: Long-term risk of ischemic heart disease after adjuvant radiotherapy in breast cancer: results from a large population-based cohort

BC characteristicsBC all, n (%)BC right, n (%)BC left, n (%)
No. of women60,217 (100.0)28,903 (100.0)30,840 (100.0)
T status
 T08616 (14.3)4224 (14.6)4391 (14.2)
 T128,100 (46.7)13,527 (46.8)14,289 (46.3)
 T218,185 (30.2)8646 (29.9)9390 (30.4)
 T32810 (4.7)1329 (4.6)1457 (4.7)
 T41165 (1.9)560 (1.9)605 (2.0)
 TX1341 (2.2)617 (2.1)708 (2.3)
N status
 N033,659 (55.9)16,226 (56.1)17,155 (55.6)
 N1–312,799 (21.3)6154 (21.3)6565 (21.3)
 N4+5993 (10.0)2823 (9.8)3120 (10.1)
 NX7766 (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)
 Missing11,383 (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)
 Missing12,009 (19.9)5654 (19.6)6120 (19.8)
Surgery
 No surgery2345 (3.9)1115 (3.9)1212 (3.9)
 BCS32,583 (54.1)15,873 (54.9)16,456 (53.4)
 Mastectomy23,917 (39.7)11,268 (39.0)12,453 (40.4)
 Missing1372 (2.3)647 (2.2)719 (2.3)
RT stratified for pathological node stage
 No RT22,790 (37.8)10,808 (37.4)11,794 (38.2)
 RT N021,524 (35.7)10,472 (36.2)10,887 (35.3)
 RT N1–39088 (15.1)4360 (15.1)4658 (15.1)
 RT N4+4679 (7.8)2219 (7.7)2423 (7.9)
 RT NX2136 (3.5)1044 (3.6)1078 (3.5)
Endocrine therapy
 Yes36,893 (61.3)17,884 (61.9)18,867 (61.2)
 No23,324 (38.7)11,019 (38.1)11,973 (38.8)
Chemotherapy
 Yes16,552 (27.5)7980 (27.6)8528 (27.7)
 No43,665 (72.5)20,923 (72.4)22,312 (72.3)
Trastuzumaba
 Yes1943 (7.5)919 (7.3)1024 (7.6)
 No23,964 (92.5)11,595 (92.7)12,368 (92.4)
  1. Patient characteristics for women with breast cancer (BC) by BC laterality
  2. No. number, T pathological tumor stage, N pathological lymph node stage, ER estrogen receptor, PR progesterone receptor, BCS breast-conserving surgery, RT radiotherapy
  3. aIncluded women with BC registered from 2005 and later