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Results of multivariate analysis
| Variable | Wald statistic | p value | HR | 95% CI |
|---|---|---|---|---|
| pHa (×10) | 3.92 | 0.048 | 0.64 | 0.42–0.99 |
| Hospital stay pre ECMO (days) | 7.48 | 0.006 | 1.18 | 1.05–1.34 |
| Lactate concentration (mmol l–1) | 7.66 | 0.006 | 1.38 | 1.10–1.74 |
| Mean arterial pressure (mmHg 10–1) | 9.10 | 0.003 | 0.53 | 0.35–0.80 |
| Platelet concentration (100,000 μl–1) | 7.33 | 0.007 | 0.56 | 0.37–0.85 |
HR hazard ratio, CI confidence interval, ECMO extracorporeal membrane oxygenation
