Table 4 Average weekly rate of undergoing the operation from wait list for isolated coronary artery bypass surgery in British Columbia 1991–2000 and adjusted rate ratios by registration period
From: Time on wait lists for coronary bypass surgery in British Columbia, Canada, 1991 – 2000
Registration period | Number of operations | Total wait time, weeks | Crude Rate, per 100 | SE | Hazard ratio | 95% CI* |
|---|---|---|---|---|---|---|
1991–1992 | 1504 | 23047 | 6.5 | 0.2 | 1.00 | referent |
1993–1994 | 1646 | 25480 | 6.5 | 0.2 | 1.00 | 0.93, 1.08 |
1995–1996 | 1727 | 34186 | 5.1 | 0.1 | 0.70 | 0.65, 0.76 |
1997–1998 | 1613 | 30384 | 5.3 | 0.1 | 0.77 | 0.71, 0.83 |
1999–2000 | 1501 | 24029 | 6.2 | 0.2 | 0.94 | 0.88, 1.02 |
All periods | 7991 | 137126 | 5.8 | 0.1 | - | - |