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)

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

Female

482 (18.0)

791 (17.0)

Male

2193 (82.0)

3850 (83.0)

Urgency at registration

Semi-urgent

2107 (78.8)

3685 (79.4)

Non-urgent

568 (21.2)

956 (20.6)

Comorbidity at registration

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

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

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

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

Elective

2524 (94.4)

4526 (97.5)

Unplanned emergency

151 (5.6)

115 (2.5)


* Congestive heart failure, diabetes mellitus, chronic obstructive pulmonary disease, cancer, or rheumatoid arthritis.

†Peripheral vascular disease, cerebrovascular disease, dementia, peptic ulcer disease, hemiplegia, renal disease, or liver disease.

‡Three- or two-vessel disease with stenosis of the proximal left anterior descending artery.

§Two-vessel disease with no lesion in the proximal left anterior descending artery or single-vessel disease with stenosis of the proximal left anterior descending artery.

Sobolev et al. BMC Health Services Research 2008 8:185   doi:10.1186/1472-6963-8-185

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