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
| |
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) | ||||||||||
*1 direct admission with decision date in 2004–2005 had unknown sex.
‡Congestive heart failure, diabetes mellitus, chronic obstructive pulmonary disease, rheumatoid arthritis, or cancer.
†Peripheral vascular disease, cerebrovascular disease, dementia, peptic ulcer disease, hemiplegia, renal disease, or liver disease.
§Two or three-vessel disease with stenosis of the proximal left anterior descending (PLAD) artery.
∥Two-vessel disease with no stenosis of the PLAD artery or one-vessel disease with stenosis of the PLAD artery.