Table 2.
Estimated Risks of 90-Day Surgeon-Specific Mortality Among Surgeons Performing Coronary Artery Bypass Grafting for Medicare Beneficiaries Under Different Interventions on Surgeon Volume, United States, 2012–2016
|
Assignment
x |
Target Trial 1 a | Target Trial 2 a | Target Trial 3 b | Target Trial 4 b | ||||
|---|---|---|---|---|---|---|---|---|
| ME, % | 95% CI | ME, % | 95% CI | ME, % | 95% CI | ME, % | 95% CI | |
| −5 | 6.2 | 5.9, 6.5 | 5.5 | 3.9, 9.1 | 6.1 | 5.8, 6.4 | 4.3 | 2.6, 17.5 |
| −4 | 6.2 | 5.9, 6.4 | 5.3 | 4.1, 6.8 | 6.0 | 5.8, 6.3 | 4.8 | 2.9, 14.8 |
| −3 | 6.1 | 5.9, 6.3 | 5.4 | 4.5, 6.9 | 6.0 | 5.8, 6.2 | 5.4 | 3.5, 11.7 |
| −2 | 6.0 | 5.8, 6.2 | 5.7 | 4.7, 7.6 | 6.0 | 5.8, 6.1 | 5.9 | 4.3, 9.8 |
| −1 | 6.0 | 5.8, 6.1 | 5.9 | 4.9, 7.5 | 5.9 | 5.8, 6.1 | 6.0 | 4.8, 8.4 |
| 0 | 5.9 | 5.8, 6.1 | 6.1 | 5.1, 7.8 | 5.9 | 5.8, 6.1 | 6.2 | 5.1, 7.8 |
| 1 | 5.8 | 5.7, 6.0 | 6.3 | 5.0, 9.5 | 5.9 | 5.7, 6.0 | 6.6 | 5.2, 8.4 |
| 2 | 5.8 | 5.6, 5.9 | 6.3 | 4.6, 9.9 | 5.9 | 5.7, 6.0 | 6.7 | 4.9, 9.3 |
| 3 | 5.7 | 5.6, 5.9 | 5.8 | 4.0, 9.7 | 5.8 | 5.7, 6.0 | 6.4 | 4.8, 8.9 |
| 4 | 5.7 | 5.5, 5.8 | 5.2 | 3.7, 11.8 | 5.8 | 5.7, 6.0 | 6.0 | 4.7, 9.1 |
| 5 | 5.7 | 5.5, 5.8 | 4.8 | 3.6, 16.0 | 5.8 | 5.7, 6.0 | 6.3 | 5.1, 12.1 |
Abbreviations: CABG, coronary artery bypass grafting; CI, confidence interval; ME, mortality estimate.
a In target trials 1 and 2, x denotes an addition of CABG operations for 1 (trial 1) or 4 (trial 2) 90-day interval(s).
b In target trials 3 and 4, x denotes an addition of CABG operations for below-baseline surgeons and a subtraction for above-baseline surgeons for 1 (trial 3) or 4 (trial 4) 90-day interval(s).