Table 5.
Access to surgery by registration period and priority group for subjects registered for isolated coronary artery bypass surgery in British Columbia 1991–2000, as measured by adjusted hazard ratios*
| Registration period | Priority 1 | Priority 2 | Priority 3 | |||
| HR | (95% CI) | HR | (95% CI) | HR | (95% CI) | |
| 1991–1992 | 1.00 | referent | 1.00 | referent | 1.00 | referent |
| 1993–1994 | 0.79 | (0.57, 1.09) | 1.10 | (1.01, 1.20) | 0.78 | (0.65, 0.92) |
| 1995–1996 | 0.66 | (0.50, 0.87) | 0.71 | (0.65, 0.78) | 0.69 | (0.58, 0.82) |
| 1997–1998 | 0.49 | (0.36, 0.67) | 0.82 | (0.75, 0.89) | 0.75 | (0.63, 0.88) |
| 1999–2000 | 0.47 | (0.33, 0.68) | 0.99 | (0.90, 1.08) | 1.07 | (0.90, 1.26) |
Abbreviations: HR = hazard ratio; CI = confidence interval
*adjusted for priority group and comorbidity; stratified by age and sex