Mortality and adjusted ORs for 90 day in-hospital mortality according to hyperoxaemia variables
| Variable | Patients, n (%) | Deaths, n (%) | OR* | P values |
| PaO2MAX | 10 141 | |||
| Fourth quintile (<137 mm Hg) | 8081 (79.7) | 500 (6.2) | 1 | |
| Upper quintile (≥137 mm Hg) | 2060 (20.3) | 84 (4.1) | 0.79 (0.61–1.02) | 0.0715 |
| PaO2AVG | ||||
| Fourth quintile (<105 mm Hg) | 8140 (80.3) | 510 (6.3) | ||
| Upper quintile (≥105 mm Hg) | 2001 (19.7) | 74 (3.7) | 0.92 (0.69–1.24) | 0.5863 |
| PaO2MED | ||||
| Fourth quintile (<103 mm Hg) | 8111 (80.0) | 513 (6.3) | ||
| Upper quintile (≥103 mm Hg) | 2030 (20.0) | 71 (3.5) | 0.82 (0.61–1.11) | 0.2005 |
| AUC72 | ||||
| Fourth quintile (<174 mm Hg) | 8124 (80.1) | 422 (5.2) | ||
| Upper quintile (≥174 mm Hg) | 2017 (19.9) | 162 (8.0) | 1.53 (1.25–1.88) | <0.0001 |
*Adjusted for age, sex, NEWS, initial bilirubin and initial PO2.
PO2, PaO2 of oxygen; PaO2Max, highest value of PO2 within 72 hours; PaO2AVG, average value of PO2 within 72 hours; PaO2MED, median value of PO2 within 72 hours; AUC72, area under the curve divided by elapsed time between ED arrival and the last result of PO2 within 72 hours.