Research Article
Mortality Prediction Using SaO2/FiO2 Ratio Based on eICU Database Analysis
Table 1
Summary statistics of demographics and features.
| | | Overall | Alive | Expired | P value |
| | n | 33701 | 29363 | 4338 | | | Age, mean (SD) | 63.2 (15.5) | 62.8 (15.5) | 65.9 (14.9) | <0.001 | | Vent, n (%) NM | 5873 (17.4) | 5477 (18.7) | 396 (9.1) | <0.001 | | Vent, n (%) M | 27828 (82.6) | 23886 (81.3) | 3942 (90.9) | | | PaO2, mean (SD) | 130.3 (85.2) | 130.1 (83.7) | 131.1 (94.5) | 0.526 | | FiO2, mean (SD) | 59.3 (26.3) | 57.1 (25.5) | 74.4 (26.3) | <0.001 | | SaO2, mean (SD) | 95.4 (7.4) | 96.0 (5.8) | 91.6 (13.4) | <0.001 | | Gender, n (%) m | 18991 (56.4) | 16534 (56.3) | 2457 (56.6) | 0.695 | | Gender, n (%) f | 14710 (43.6) | 12829 (43.7) | 1881 (43.4) | | | APACHE, mean (SD) | 74.4 (29.7) | 69.6 (26.1) | 107.0 (32.0) | <0.001 | | P/F, mean (SD) | 239.3 (124.3) | 246.1 (122.3) | 193.8 (128.4) | <0.001 | | S/F, mean (SD) | 197.3 (91.5) | 204.1 (91.8) | 150.6 (73.7) | <0.001 |
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n: total number of individuals; SD: standard deviation; NM: nonmechanically ventilated patients; M: mechanically ventilated patients; PaO2: partial pressure of oxygen; FiO2: fraction of inspired oxygen; SaO2: oxygen saturation; m: male; f: female; APACHE: Acute Physiology and Chronic Health Evaluation score; P/F: PaO2 and FiO2 ratio; S/F: SaO2 and FiO2 ratio.
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