| Univariable | P | Multivariable 1b | P | Multivariable 2c | P |
---|
HR (95% CI) | HR (95% CI) | HR (95% CI) |
---|
Normoxia/near-normoxia | Reference | | Reference | | Reference | |
Mild hyperoxia | 0.69 (0.51–0.93) | 0.016 | 0.82 (0.60–1.11) | 0.199 | 0.72 (0.52–0.99) | 0.048 |
Severe hyperoxia | 1.12 (0.72–1.74) | 0.627 | 1.41 (0.89–2.24) | 0.141 | 1.05 (0.65–1.69) | 0.851 |
- HR Hazard ratio, CI Confidence interval
- aTwenty-two patients were not included because their survival data were not available
- bModel 1 was adjusted for variables consisting of the European System for Cardiac Operative Risk Evaluation II model (see the “Methods” section)
- cModel 2 was adjusted for all variables used in model 1 and demographic data and perioperative variables listed in Table 1 (see the “Methods” section)