Table 1 Characteristics of 12,030 patients, registered for bypass surgery in British Columbia 1992–2005, overall and by urgency group at registration
Characteristic | All patients* (n = 12,030) | Urgent (n = 739) | Semiurgent (n = 8,769) | Nonurgent (n = 2,304) | ||||
|---|---|---|---|---|---|---|---|---|
Sex | ||||||||
Men | 9981 | (83.0) | 599 | (81.1) | 7327 | (83.6) | 1878 | (81.5) |
Women | 2049 | (17.0) | 140 | (18.9) | 1442 | (16.4) | 426 | (18.5) |
Age group (years) | ||||||||
<50 | 851 | (7.1) | 49 | (6.6) | 606 | (6.9) | 187 | (8.1) |
50–59 | 2665 | (22.2) | 140 | (18.9) | 1946 | (22.2) | 541 | (23.5) |
60–69 | 4510 | (37.5) | 266 | (36.0) | 3313 | (37.8) | 858 | (37.2) |
70–79 | 3648 | (30.3) | 247 | (33.4) | 2652 | (30.2) | 657 | (28.5) |
≥80 | 356 | (3.0) | 37 | (5.0) | 252 | (2.9) | 61 | (2.6) |
Coronary anatomy at registration | ||||||||
Left main | 1780 | (14.8) | 493 | (66.7) | 1253 | (14.3) | 27 | (1.2) |
Multivessel† | 8715 | (72.4) | 195 | (26.4) | 6673 | (76.1) | 1792 | (77.8) |
Limited‡ | 1535 | (12.8) | 51 | (6.9) | 843 | (9.6) | 485 | (21.1) |
Comorbidity at registration | ||||||||
Major conditions§ | 2901 | (24.1) | 184 | (24.9) | 2084 | (23.8) | 556 | (24.1) |
Other conditions|| | 2856 | (23.7) | 217 | (29.4) | 2139 | (24.4) | 462 | (20.1) |
None | 6273 | (52.1) | 338 | (45.7) | 4546 | (51.8) | 1286 | (55.8) |
Calendar period at registration | ||||||||
1992–1996 | 4489 | (37.3) | 390 | (52.8) | 3239 | (36.9) | 822 | (35.7) |
1997–2001 | 4293 | (35.7) | 200 | (27.1) | 3049 | (34.8) | 1013 | (44.0) |
2002–2005 | 3248 | (27.0) | 149 | (20.2) | 2481 | (28.3) | 469 | (20.4) |
Institution at registration | ||||||||
1 | 2668 | (22.2) | 137 | (18.5) | 1987 | (22.7) | 523 | (22.7) |
2 | 2873 | (23.9) | 258 | (34.9) | 2380 | (27.1) | 202 | (8.8) |
3 | 2914 | (24.2) | 62 | (8.4) | 1455 | (16.6) | 1249 | (54.2) |
4 | 3575 | (29.7) | 282 | (38.2) | 2947 | (33.6) | 330 | (14.3) |
Institution booking catheterization | ||||||||
1 | 2759 | (22.9) | 152 | (20.6) | 2079 | (23.7) | 500 | (21.7) |
2 | 2775 | (23.1) | 249 | (33.7) | 2296 | (26.2) | 201 | (8.7) |
3 | 2037 | (16.9) | 36 | (4.9) | 1048 | (12.0) | 857 | (37.2) |
4 | 2798 | (23.3) | 211 | (28.6) | 2235 | (25.5) | 331 | (14.4) |
Other | 1661 | (13.8) | 91 | (12.3) | 1111 | (12.7) | 415 | (18.0) |
Mode of admission for catheterization | ||||||||
Emergency department | 862 | (7.2) | 100 | (13.5) | 644 | (7.3) | 107 | (4.6) |
Otherwise¶ | 11168 | (92.8) | 639 | (86.5) | 8125 | (92.7) | 2197 | (95.4) |
Urgency at admission for catheterization | ||||||||
Elective | 9600 | (79.8) | 496 | (67.1) | 6920 | (78.9) | 2007 | (87.1) |
Emergency or urgent | 2430 | (20.2) | 243 | (32.9) | 1849 | (21.1) | 297 | (12.9) |
Weeks between catheterization and registration | ||||||||
0–1 | 6651 | (55.3) | 519 | (70.2) | 4743 | (54.1) | 1268 | (55.0) |
2–3 | 2066 | (17.2) | 120 | (16.2) | 1564 | (17.8) | 357 | (15.5) |
4–5 | 1041 | (8.7) | 40 | (5.4) | 811 | (9.2) | 174 | (7.6) |
6–7 | 642 | (5.3) | 17 | (2.3) | 483 | (5.5) | 131 | (5.7) |
≥8 | 1630 | (13.5) | 43 | (5.8) | 1168 | (13.3) | 374 | (16.2) |
Socioeconomic decile | ||||||||
1 | 1160 | (9.6) | 77 | (10.4) | 818 | (9.3) | 246 | (10.7) |
2 | 1208 | (10.0) | 68 | (9.2) | 888 | (10.1) | 236 | (10.2) |
3 | 1172 | (9.7) | 85 | (11.5) | 832 | (9.5) | 241 | (10.5) |
4 | 1182 | (9.8) | 46 | (6.2) | 916 | (10.4) | 202 | (8.8) |
5 | 1122 | (9.3) | 82 | (11.1) | 825 | (9.4) | 194 | (8.4) |
6 | 1103 | (9.2) | 67 | (9.1) | 799 | (9.1) | 211 | (9.2) |
7 | 1119 | (9.3) | 65 | (8.8) | 805 | (9.2) | 214 | (9.3) |
8 | 1167 | (9.7) | 65 | (8.8) | 862 | (9.8) | 222 | (9.6) |
9 | 1138 | (9.5) | 75 | (10.1) | 819 | (9.3) | 233 | (10.1) |
10 | 1124 | (9.3) | 76 | (10.3) | 818 | (9.3) | 203 | (8.8) |
Unknown or missing | 535 | (4.4) | 33 | (4.5) | 387 | (4.4) | 102 | (4.4) |