Covariate | Odds ratio | 95% Confidence interval |
---|---|---|
PaO2 in kPa: | Â | Â |
   < 8.9 (n = 6,937) | 1.12 | 1.03 to 1.21 |
   8.9 to 10.6 (reference category) (n = 7,466) | 1 |  |
   10.6 to 12.6 (n = 6,430) | 1.11 | 1.02 to 1.21 |
   12.6 to 16.4 (n = 7,278) | 1.08 | 1.00 to 1.18 |
   ≥ 16.4 (n = 8,196) | 1.23 | 1.13 to 1.34 |
   FiO2 (per 10%) | 1.12 | 1.10 to 1.13 |