Table 1.
Baseline characteristics of the 27,248 patients included in the analysis
| Parameter | |
| Male gender | 15,258 (56.0) |
| Age, categories | |
| ≤ 50y | 6,179 (22.7) |
| ]50, 60] | 4,699 (17.2) |
| ]60, 70] | 5,398 (19.8) |
| > 70y | 10,972 (40.3) |
| African-american | 2,091 (7.8) |
| Charlson comorbities score | 2 [1,3] |
| SAPS III | 38 [29, 52] |
| SOFA score | 4 [2,6] |
| Day-1 clinical and biological data | |
| Worst PaCO2 level | 46 [41, 54] |
| Mean PaCO2 level | 41 [37, 45] |
| Worst PaO2/FiO2 ratio level | 166 [103, 260] |
| Mean PaO2/FiO2 ratio level | 302 [213, 430] |
| Mean central venous pressure | 10 [8, 13] |
| Mean arterial blood pressure | 77 [71, 85] |
| Current infection | 11,516 (42.3) |
| Current infection with acute organ dysfunction* | 7,745 (28.4) |
| ICU length of stay, day | 2.4 [1.2, 4.2] |
| ICU mortality | 1,996 (7.3) |
| Hospital mortality | 2,893 (10.6) |
Continuous variables are presented as median [interquartile]
Categorical variables are presented as n (%)
Results are calculated on available data
*
According to Angus’ definition, as previously described