Table 2 Characteristics of 12,818 direct admissions, who had decision for coronary artery bypass grafting in British Columbia 1992–2005, by calendar period of decision
From: Evaluation of supply-side initiatives to improve access to coronary bypass surgery
All periods | 1992–1993 | 1994–1995 | 1996–1997 | 1998–1999 | 2000–2001 | 2002–2003 | 2004–2005 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Characteristic | (n=12818) | (n=1204) | (n=1474) | (n=1621) | (n=2089) | (n=2121) | (n=1940) | (n=2369) | ||||||||
Age group at decision (years) | ||||||||||||||||
<50 | 920 | (7.2) | 111 | (9.2) | 97 | (6.6) | 129 | (8.0) | 142 | (6.8) | 157 | (7.4) | 139 | (7.2) | 145 | (6.1) |
50–59 | 2604 | (20.3) | 228 | (18.9) | 275 | (18.7) | 313 | (19.3) | 435 | (20.8) | 432 | (20.4) | 414 | (21.3) | 507 | (21.4) |
60–69 | 4354 | (34.0) | 442 | (36.7) | 569 | (38.6) | 571 | (35.2) | 715 | (34.2) | 676 | (31.9) | 615 | (31.7) | 766 | (32.3) |
70–79 | 4341 | (33.9) | 389 | (32.3) | 481 | (32.6) | 550 | (33.9) | 726 | (34.8) | 747 | (35.2) | 663 | (34.2) | 785 | (33.1) |
≥80 | 599 | (4.7) | 34 | (2.8) | 52 | (3.5) | 58 | (3.6) | 71 | (3.4) | 109 | (5.1) | 109 | (5.6) | 166 | (7.0) |
Sex* | ||||||||||||||||
Men | 10067 | (78.5) | 914 | (75.9) | 1104 | (74.9) | 1247 | (76.9) | 1659 | (79.4) | 1687 | (79.5) | 1525 | (78.6) | 1931 | (81.5) |
Women | 2750 | (21.5) | 290 | (24.1) | 370 | (25.1) | 374 | (23.1) | 430 | (20.6) | 434 | (20.5) | 415 | (21.4) | 437 | (18.4) |
Urgency at decision | ||||||||||||||||
Urgent | 5944 | (46.4) | 727 | (60.4) | 944 | (64.0) | 900 | (55.5) | 1046 | (50.1) | 887 | (41.8) | 698 | (36.0) | 742 | (31.3) |
Semiurgent | 6445 | (50.3) | 453 | (37.6) | 485 | (32.9) | 654 | (40.3) | 906 | (43.4) | 1148 | (54.1) | 1211 | (62.4) | 1588 | (67.0) |
Nonurgent | 429 | (3.3) | 24 | (2.0) | 45 | (3.1) | 67 | (4.1) | 137 | (6.6) | 86 | (4.1) | 31 | (1.6) | 39 | (1.6) |
Institution at decision | ||||||||||||||||
1 | 2437 | (19.0) | 89 | (7.4) | 206 | (14.0) | 295 | (18.2) | 381 | (18.2) | 473 | (22.3) | 427 | (22.0) | 566 | (23.9) |
2 | 2962 | (23.1) | 342 | (28.4) | 369 | (25.0) | 333 | (20.5) | 466 | (22.3) | 426 | (20.1) | 457 | (23.6) | 569 | (24.0) |
3 | 4964 | (38.7) | 417 | (34.6) | 623 | (42.3) | 838 | (51.7) | 870 | (41.6) | 799 | (37.7) | 683 | (35.2) | 734 | (31.0) |
4 | 2455 | (19.2) | 356 | (29.6) | 276 | (18.7) | 155 | (9.6) | 372 | (17.8) | 423 | (19.9) | 373 | (19.2) | 500 | (21.1) |
Comorbidities at decision | ||||||||||||||||
Major conditions‡ | 5458 | (42.6) | 413 | (34.3) | 552 | (37.4) | 626 | (38.6) | 885 | (42.4) | 949 | (44.7) | 914 | (47.1) | 1119 | (47.2) |
Other conditions† | 6248 | (48.7) | 708 | (58.8) | 809 | (54.9) | 885 | (54.6) | 1033 | (49.4) | 1027 | (48.4) | 857 | (44.2) | 929 | (39.2) |
None | 1112 | (8.7) | 83 | (6.9) | 113 | (7.7) | 110 | (6.8) | 171 | (8.2) | 145 | (6.8) | 169 | (8.7) | 321 | (13.6) |
Coronary anatomy affected at decision | ||||||||||||||||
Left main | 3184 | (24.8) | 282 | (23.4) | 358 | (24.3) | 377 | (23.3) | 466 | (22.3) | 539 | (25.4) | 534 | (27.5) | 628 | (26.5) |
Multivessel§ | 8855 | (69.1) | 814 | (67.6) | 1019 | (69.1) | 1136 | (70.1) | 1501 | (71.9) | 1470 | (69.3) | 1307 | (67.4) | 1608 | (67.9) |
Limited∥ | 779 | (6.1) | 108 | (9.0) | 97 | (6.6) | 108 | (6.7) | 122 | (5.8) | 112 | (5.3) | 99 | (5.1) | 133 | (5.6) |
Time between catheterization and decision for surgical revascularization (weeks) | ||||||||||||||||
0–1 | 8576 | (66.9) | 885 | (73.5) | 1021 | (69.3) | 991 | (61.1) | 1381 | (66.1) | 1465 | (69.1) | 1246 | (64.2) | 1587 | (67.0) |
2–3 | 2232 | (17.4) | 164 | (13.6) | 215 | (14.6) | 326 | (20.1) | 334 | (16.0) | 372 | (17.5) | 406 | (20.9) | 415 | (17.5) |
4–5 | 592 | (4.6) | 46 | (3.8) | 54 | (3.7) | 81 | (5.0) | 87 | (4.2) | 85 | (4.0) | 113 | (5.8) | 126 | (5.3) |
6–7 | 364 | (2.8) | 25 | (2.1) | 38 | (2.6) | 45 | (2.8) | 76 | (3.6) | 46 | (2.2) | 58 | (3.0) | 76 | (3.2) |
≥8 | 1054 | (8.2) | 84 | (7.0) | 146 | (9.9) | 178 | (11.0) | 211 | (10.1) | 153 | (7.2) | 117 | (6.0) | 165 | (7.0) |