Table 4:
Hazard ratios for outcomes after PCI or ONCAB compared with that after OPCAB adjusted by propensity score stratification
| Number of events |
Versus OPCAB | HR | 95% CI | p value* | |||
|---|---|---|---|---|---|---|---|
| PCI (n = 3877) | ONCAB (n = 1381) | OPCAB (n = 1069) | |||||
| All-cause death | 454 | 154 | 125 | PCI | 1.50 | 1.20–1.86 | <0.01 |
| ONCAB | 1.18 | 0.93–1.51 | 0.33 | ||||
| Cardiovascular death | 282 | 113 | 73 | PCI | 1.74 | 1.32–2.31 | <0.01 |
| ONCAB | 1.49 | 1.11–2.02 | 0.02 | ||||
| Stroke | 192 | 107 | 64 | PCI | 0.98 | 0.71–1.34 | 1.00 |
| ONCAB | 1.59 | 1.16–2.18 | <0.01 | ||||
| Myocardial infarction | 188 | 54 | 29 | PCI | 2.41 | 1.57–3.71 | <0.01 |
| ONCAB | 1.61 | 1.01–2.55 | 0.09 | ||||
| Composite eventa | 564 | 230 | 139 | PCI | 1.52 | 1.24–1.86 | <0.01 |
| ONCAB | 1.53 | 1.24–1.90 | <0.01 | ||||
| Any revascularization | 1873 | 152 | 125 | PCI | 6.61 | 5.46–8.01 | <0.01 |
| ONCAB | 0.97 | 0.77–1.24 | 1.00 | ||||
a Composite event : cardiovascular death, stroke, or myocardial infarction.
*Adjusted for multiple comparison by the Bonferroni correction, i.e. we multiplied the original p values by 2 e.g. all-cause mortality after PCI was 1.50 times higher than that after OPCAB (p < 0.01), whereas that after ONCAB was similar to OPCAB (hazard ratio = 1.18, p = 0.33).