Table 1 Characteristics of the study population
BC all, n (%) | BC right, n (%) | BC left, n (%) | Women without BC, n (%) | |
|---|---|---|---|---|
No. of women | 60,217 | 28,903 | 30,840 | 300,791 |
FU time, yrs (SD) | 8.1 (5.5) | 8.1 (5.5) | 8.1 (5.5) | 9.0 (5.6) |
Health care region | ||||
Stockholm | 25,606 (42.5) | 12,448 (43.1) | 13,158 (42.7) | 127,937 (42.5) |
Uppsala/Örebro | 25,323 (42.1) | 11,919 (41.2) | 12,934 (41.9) | 126,490 (42.1) |
Northern region | 9288 (15.4) | 4536 (15.7) | 4748 (15.4) | 46,364 (15.4) |
Year of inclusion | ||||
1992–1997 | 14,149 (23.5) | 6578 (22.8) | 7103 (23.0) | 70,666 (23.5) |
1998–2002 | 14,285 (23.7) | 6960 (24.1) | 7320 (23.7) | 71,362 (23.7) |
2003–2007 | 14,960 (24.8) | 7210 (24.9) | 7749 (25.1) | 74,740 (24.8) |
2008–2012 | 16,823 (27.9) | 8155 (28.2) | 8668 (28.1) | 84,023 (27.9) |
Age at inclusion | ||||
< 45 yrs | 5770 (9.6) | 2792 (9.7) | 2935 (9.5) | 28,826 (9.6) |
45–54 yrs | 12,831 (21.3) | 6199 (21.4) | 6526 (21.2) | 64,166 (21.3) |
55–64 yrs | 16,054 (26.7) | 7907 (27.4) | 8046 (26.1) | 80,017 (26.6) |
65–74 yrs | 13,928 (23.1) | 6604 (22.8) | 7203 (23.4) | 69,691 (23.2) |
75–84 yrs | 8101 (13.5) | 3768 (13.0) | 4257 (13.8) | 40,461 (13.5) |
85 yrs + | 3533 (5.9) | 1633 (5.6) | 1873 (6.1) | 17,630 (5.9) |
Marital status | ||||
Married | 30,766 (51.1) | 14,769 (51.1) | 15,744 (51.1) | 152,775 (50.8) |
Not married | 29,451 (48.9) | 14,134 (48.9) | 15,096 (48.9) | 148,016 (49.2) |
Level of education | ||||
Low | 18,755 (31.1) | 8844 (30.6) | 9684 (31.4) | 100,623 (33.5) |
Middle | 22,808 (37.9) | 10,987 (38.0) | 11,689 (37.9) | 115,079 (38.3) |
High | 16,626 (27.6) | 8143 (28.2) | 8420 (27.3) | 73,246 (24.4) |
Missing | 2028 (3.4) | 929 (3.2) | 1047 (3.4) | 11,843 (3.9) |
CCI | ||||
0 | 50,825 (84.4) | 24,447 (84.6) | 25,985 (84.3) | 255,689 (85.0) |
1 | 4788 (8.0) | 2249 (7.8) | 2483 (8.1) | 24,597 (8.2) |
2 | 2879 (4.8) | 1398 (4.8) | 1470 (4.8) | 13,350 (4.4) |
3+ | 1725 (2.9) | 809 (2.8) | 902 (2.9) | 7155 (2.4) |
No. of previous IHD events | ||||
0 | 57,877 (96.1) | 27,775 (96.1) | 29,641 (96.1) | 288,263 (95.8) |
1 | 1421 (2.4) | 679 (2.3) | 732 (2.4) | 7598 (2.5) |
2+ | 919 (1.5) | 449 (1.6) | 467 (1.5) | 4930 (1.6) |