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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*

From: Time on wait lists for coronary bypass surgery in British Columbia, Canada, 1991 – 2000

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)
  1. Abbreviations: HR = hazard ratio; CI = confidence interval
  2. *adjusted for priority group and comorbidity; stratified by age and sex