Table 2 Characteristics of 7316 wait-listed patients who underwent isolated coronary artery bypass surgery in British Columbia 1991–2001.
Characteristic | Early surgery, N (%) | Late surgery, N (%) |
|---|---|---|
Age group (yr) | Â | Â |
   40–49 | 223 (8.3) | 375 (8.1) |
   50–59 | 552 (20.6) | 1075 (23.2) |
   60–69 | 1021 (38.2) | 1772 (38.2) |
   70–79 | 830 (31.0) | 1348 (29.0) |
   80 and over | 49 (1.8) | 71 (1.5) |
Sex | Â | Â |
   Female | 482 (18.0) | 791 (17.0) |
   Male | 2193 (82.0) | 3850 (83.0) |
Urgency at registration | Â | Â |
   Semi-urgent | 2107 (78.8) | 3685 (79.4) |
   Non-urgent | 568 (21.2) | 956 (20.6) |
Comorbidity at registration | Â | Â |
   Major conditions* | 603 (22.5) | 926 (20.0) |
   Other conditions†| 785 (29.3) | 1096 (23.6) |
   None | 1287 (48.1) | 2619 (56.4) |
Affected anatomy | Â | Â |
   Left main | 403 (15.1) | 505 (10.9) |
   Multi-vessel‡ | 2054 (76.8) | 3809 (82.1) |
   Limited§ | 218 (8.1) | 327 (7.0) |
Period of registration | Â | Â |
   1991–1992 | 633 (23.7) | 710 (15.3) |
   1993–1994 | 687 (25.7) | 851 (18.3) |
   1995–1996 | 354 (13.2) | 1122 (24.2) |
   1997–1998 | 450 (16.8) | 1058 (22.8) |
   1999–2000 | 551 (20.6) | 900 (19.4) |
Hospital | Â | Â |
   1 | 662 (24.7) | 831 (17.9) |
   2 | 1004 (37.5) | 1507 (32.5) |
   3 | 390 (14.6) | 1270 (27.4) |
   4 | 619 (23.1) | 1033 (22.3) |
Mode of admission | Â | Â |
   Elective | 2524 (94.4) | 4526 (97.5) |
   Unplanned emergency | 151 (5.6) | 115 (2.5) |