Table 1 Characterisation of the study group of women (50–69 years) with an incident breast cancer diagnosis (C50) in the period 2006–2014 and a follow-up on causes of death until December 31st, 2018, with and without stratification by detection mode
Characteristics | Participants | Non- participants | Total | ||
|---|---|---|---|---|---|
Screen-detected BC N = 24,418 | Interval-detected BC N = 7795 | Screen- and interval-detected BC N = 32,213 | N = 36,017 | N = 68,230 | |
Age at diagnosis | |||||
Median, IQR | 61 (10) | 60 (9) | 60 (10) | 60 (10) | 60 (19) |
Year of diagnosis, N (%)a | |||||
2006 | 640 (2.6) | 22 (0.3) | 662 (2.1) | 5664 (15.7) | 6326 (9.3) |
2007 | 2017 (8.3) | 184 (2.4) | 2201 (6.8) | 5963 (16.6) | 8164 (12.0) |
2008 | 3142 (12.9) | 644 (8.3) | 3786 (11.8) | 5131 (14.2) | 8917 (13.1) |
2009 | 3135 (12.8) | 937 (12.0) | 4072 (12.6) | 4163 (11.6) | 8235 (12.1) |
2010 | 3109 (12.7) | 1174 (15.1) | 4283 (13.3) | 3421 (9.5) | 7704 (11.3) |
2011 | 2970 (12.2) | 1168 (15.0) | 4138 (12.8) | 3262 (9.1) | 7400 (10.8) |
2012 | 3299 (13.5) | 1187 (15.2) | 4486 (13.9) | 2910 (8.1) | 7396 (10.8) |
2013 | 3072 (12.6) | 1263 (16.2) | 4335 (13.5) | 2891 (8.0) | 7226 (10.6) |
2014 | 3034 (12.4) | 1216 (15.6) | 4250 (13.2) | 2612 (7.3) | 6862 (10.1) |
Tumour stage, N (%) | |||||
T1 | 18,029 (73.8) | 3323 (42.6) | 21,352 (66.3) | 14,257 (39.6) | 35,609 (52.2) |
T2 | 5253 (21.5) | 2558 (32.8) | 7811 (24.2) | 9621 (26.7) | 17,432 (25.5) |
T3 | 430 (1.8) | 355 (4.6) | 785 (2.4) | 1581 (4.4) | 2366 (3.5) |
T4 | 113 (0.5) | 146 (1.9) | 259 (0.8) | 1666 (4.6) | 1925 (2.8) |
NA | 593 (2.4) | 1413 (18.1) | 2006 (6.2) | 8892 (24.7) | 10,898 (16.0) |
Outcome, N (%)a | |||||
Death from breast cancer (ICD-10: C50) | 1040 (4.3) | 883 (11.3) | 1923 (6.0) | 6894 (19.1) | 8817 (12.9) |
Death from all causes other than breast cancer (ICD-10: C50) | 1457 (6.0) | 391 (5.0) | 1848 (5.7) | 3419 (9.5) | 5272 (7.7) |
Death from causes other than breast cancer (ICD-10: C50) and cardiovascular diseases (ICD-10: I00-I99) | 1142 (4.7) | 319 (4.1) | 1461 (4.6) | 2677 (7.4) | 4138 (6.1) |
Alive | 21,921 (89.8) | 6521 (83.7) | 28,442 (88.3) | 25,699 (71.4) | 54,141 (79.4) |
Follow-up, years | |||||
Median, IQR | 7.92 (3.90) | 7.18 (3.25) | 7.75 (3.78) | 9.78 (4.28) | 8.59 (4.33) |
Meanb, SE | 7.96 (0.02) | 7.29 (0.02) | 7.81 (0.01) | 9.28 (0.02) | 8.52 (0.01) |