Covariate
|
Odds ratio
|
95% Confidence interval
|
---|
PaO2 in kPa:
| | |
< 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
|
- Odds ratio after adjustment for the following potential confounders: age, SAPS II, GCS score below 15, admission type, individual hospital. The equation of the model is: Logit(p) = -5.419 + 0.059 × age (per 5 years) + 0.066 × SAPS II + 0.070 × I(GCS < 15) + 0.221 × I(admission type = urgent) + 0.453 × I(admission type = medical) + βhosp + 0.105 × FiO2 (per 10%) + 0.109 × I(PaO2 < 67) + 0.109 × I(80 ≤ PaO2 < 95) +0.079 × I(95 ≤ PaO2 < 123) +0.206 × I(PaO2 ≥ 123) Probability of in-hospital death = e(logit)/(1+e(logit)). Median βhos for individual hospitals was -0.12 (IQR -0.43 to 0.05).
- GCS, Glasgow Coma Scale; ICU, intensive care unit; IQR, interquartile range; SAPS II, Simplified Acute Physiology Score II.