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Hazard Ratios for death at any time after registration for CABG for treated patients relative to untreated patients and for post-operative death for patients who had surgery within target times relative to those who had surgery after target times (figures in brackets are 95-percent confidence interval) |
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| Semi-urgent group |
Non-urgent group |
|
|
|
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| Overall survival, time-dependent treatment effect* |
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| No. of deaths/no. of patients |
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| Treated patients |
517/5,792 |
95/1,524 |
| Untreated patients |
152/541 |
69/363 |
| Model I, Treatment indicator |
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| Treated vs Untreated |
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| Unadjusted hazard ratio |
0.53 (0.43–0.65) |
0.42 (0.30–0.59) |
| Adjusted hazard ratio |
0.54 (0.44–0.66) |
0.45 (0.32–0.63) |
| Model II, Treatment by target time |
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| Early Surgery vs Untreated |
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| Unadjusted hazard ratio |
0.47 (0.37–0.59) |
0.35 (0.23–0.55) |
| Adjusted hazard ratio |
0.45 (0.36–0.58) |
0.36 (0.23–0.56) |
| Late Surgery vs Untreated |
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| Unadjusted hazard ratio |
0.58 (0.47–0.73) |
0.47 (0.32–0.68) |
| Adjusted hazard ratio |
0.61 (0.49–0.76) |
0.51 (0.35–0.74) |
| Model III, Treatment by target time and admission type |
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| Early Surgery vs Untreated |
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| Unadjusted hazard ratio |
0.47 (0.37–0.60) |
0.32 (0.20–0.51) |
| Adjusted hazard ratio |
0.45 (0.36–0.58) |
0.33 (0.20–0.53) |
| Late Surgery vs Untreated |
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| Unadjusted hazard ratio |
0.58 (0.46–0.73) |
0.46 (0.32–0.67) |
| Adjusted hazard ratio |
0.61 (0.48–0.76) |
0.51 (0.35–0.74) |
| Unplanned Emergency vs Untreated |
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| Unadjusted hazard ratio |
0.51 (0.31–0.84) |
0.80 (0.37–1.76) |
| Adjusted hazard ratio |
0.52 (0.32–0.87) |
0.73 (0.33–1.63) |
| Long-term post-operative survival† |
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| No. of deaths/follow-up yrs |
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| Early Surgery |
153/8,409 |
31/2,121 |
| Late Surgery |
303/13,883 |
64/3,648 |
| Unadjusted hazard ratio |
0.85 (0.70–1.03) |
0.84 (0.55–1.29) |
| Adjusted hazard ratio |
0.79 (0.65–0.96) |
0.86 (0.55–1.33) |
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*Among 8,220 patients who were registered to undergo CABG. †Within five years after discharge date among 7,153 patients who underwent surgery and did not die in hospital, after removal of 66 patients with invalid discharge dates Target Time = Recommended time | ||
Sobolev et al. Journal of Cardiothoracic Surgery 2008 3:47 doi:10.1186/1749-8090-3-47 |
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