Outcome | All subjects n = 688 | ED hypoxiaa n = 38 | ED normoxiab n = 350 | ED hyperoxiac n = 300 | Adjusted odds ratio or between-group difference (95% CI) | P value |
---|---|---|---|---|---|---|
Primary outcome, n (%) | ||||||
 Mortality | 162 (23.5) | 5 (13.2) | 68 (19.4) | 89 (29.7) | 1.95 (1.34–2.85) | <0.001 |
Secondary outcomes (days) | ||||||
 Ventilator-free | 16.5 (10.9) | 20.3 (9.7) | 17.9 (10.3) | 14.2 (11.3) | 3.7 (2.0–5.4) | <0.001 |
 ICU-free | 15.2 (10.3) | 17.9 (9.1) | 16.7 (9.8) | 13.2 (10.7) | 3.5 (1.9–5.1) | <0.001 |
 Hospital-free | 10.7 (9.2) | 12.8 (9.3) | 11.9 (9.0) | 8.9 (9.1) | 2.9 (1.5–4.3) | <0.001 |