Table 4 Odds ratios of preoperative death, unplanned emergency surgery, and planned surgery for patient and center factors, for patients registered for bypass surgery in 1992–2005, derived from discrete-time survival regression models*
Factor | Preoperative deaths OR (95% CI) | Emergency surgeries OR (95% CI) | Planned surgeries OR (95% CI) |
|---|---|---|---|
Urgency group at registration | |||
Urgent | NA1 | 4.93 (3.38–7.18) | 2.22 (2.02–2.45) |
Semiurgent | 1.00 | 1.00 | 1.00 |
Nonurgent | 1.07 (0.69–1.65) | 0.72 (0.54–0.97) | 0.67 (0.63–0.72) |
Sex | |||
Men | 1.00 | 1.00 | 1.00 |
Women | 0.48 (0.25–0.93) | 1.06 (0.82–1.38) | 0.89 (0.84–0.94) |
Age decade | 1.36 (1.08–1.71) | NA2 | NA2 |
Age group (years) | |||
<50 | NA2 | 1.32 (0.87–1.99) | 1.10 (1.01–1.20) |
50–59 | NA2 | 1.00 | 1.00 |
60–69 | NA2 | 1.04 (0.78–1.37) | 1.05 (1.00–1.11) |
70–79 | NA2 | 1.20 (0.90–1.60) | 1.07 (1.01–1.13) |
≥80 | NA2 | 0.99 (0.52–1.88) | 0.84 (0.73–0.96) |
Coronary anatomy at registration | |||
Left main | NA3 | 1.00 | 1.00 |
Multivessel† | NA3 | 1.38 (0.96–1.97) | 0.83 (0.78–0.89) |
Limited‡ | NA3 | 1.93 (1.23–3.02) | 0.95 (0.86–1.03) |
Comorbidity at registration | |||
Major conditions§ | 1.73 (0.97–3.09) | 1.01 (0.77–1.32) | 0.91 (0.85–0.96) |
Other conditions|| | 1.00 | 1.00 | 1.00 |
None | 0.96 (0.55–1.66) | 0.88 (0.67–1.16) | 0.87 (0.82–0.92) |
Calendar Period at registration | |||
1992–1996 | 1.33 (0.85–2.11) | 1.13 (0.90–1.43) | 1.16 (1.10–1.22) |
1997–2001 | 1.00 | 1.00 | 1.00 |
2002–2005 | 0.84 (0.48–1.47) | 0.74 (0.55–0.98) | 1.05 (0.99–1.10) |
Institution at registration | |||
1 | NA3 | 1.71 (0.98–3.01) | 0.78 (0.70–0.87) |
2 | NA3 | 1.00 | 1.00 |
3 | NA3 | 0.79 (0.47–1.33) | 0.54 (0.49–0.59) |
4 | NA3 | 1.23 (0.29–5.22) | 1.98 (1.59–2.46) |
Institution from where catheterization was booked | |||
1 | NA3 | 0.70 (0.40–1.23) | 1.24 (1.11–1.39) |
2 | NA3 | 1.00 | 1.00 |
3 | NA3 | 1.00 (0.58–1.74) | 0.98 (0.89–1.08) |
4 | NA3 | 0.82 (0.19–3.50) | 0.73 (0.59–0.92) |
Other | NA3 | 0.31 (0.18–0.52) | 1.16 (1.07–1.25) |
Mode of admission for catheterization | |||
Emergency department | NA3 | 5.66 (3.86–8.28) | 0.96 (0.87–1.07) |
Otherwise¶ | NA3 | 1.00 | 1.00 |
Urgency at admission for catheterization | |||
Elective | NA3 | 1.00 (0.70–1.43) | 0.85 (0.79–0.90) |
Emergency or urgent | NA3 | 1.00 | 1.00 |
Time between catheterization and registration | |||
Per week | 1.01 (0.98–1.03) | NA2 | NA2 |
0–1 weeks | NA2 | 1.14 (0.85–1.53) | 1.11 (1.04–1.17) |
2–3 | NA2 | 1.00 | 1.00 |
4–5 | NA2 | 1.17 (0.76–1.78) | 1.09 (1.00–1.18) |
6–7 | NA2 | 1.02 (0.61–1.69) | 0.87 (0.79–0.97) |
≥8 | NA2 | 0.87 (0.60–1.28) | 0.87 (0.81–0.94) |