Table 2.
Characteristics of survivors and non-survivors at hospital discharge.
| Survivors | Non-Survivors | p-Value | ||
|---|---|---|---|---|
| Patients | N (%) | 1022 (74.3) | 354 (25.7) | |
| Age | years | 68 (57–76) | 77 (71–83) | <0.001 |
| Body mass index | kg∗m−2 | 26 (24–29) | 26 (24–29) | 0.11 |
| Male | N (%) | 648 (63.4) | 261 (73.7) | 0.001 |
| Comorbidity | ||||
| Arterial hypertension | N (%) | 377 (36.9) | 122 (34.5) | 0.45 |
| Diabetes mellitus | N (%) | 204 (20.0) | 85 (24.0) | 0.12 |
| Laboratory data | ||||
| PaO2 | mmHg | 57 (49–67) | 47 (38–56) | <0.001 |
| PaCO2 | mmHg | 34 (31–38) | 33 (30–38) | 0.003 |
| PaO2/FiO2 | mmHg | 271 (231–314) | 211 (162–254) | <0.001 |
| pH | 7.49 (7.46–7.51) | 7.48 (7.43–7.51) | <0.001 | |
| Lactate | mmol∗L−1 | 1.0 (0.7–1.3) | 1.3 (1.0–2.1) | <0.001 |
| Leukocytes | 109∗L−1 | 7.2 (5.5–9.6) | 7.6 (5.3–10.6) | 0.15 |
| Lymphocytes | 109∗L−1 | 1.0 (0.7–1.4) | 0.8 (0.6–1.1) | <0.001 |
| Platelets | 109∗L−1 | 185 (143–246) | 164 (122–226) | <0.001 |
| C-reactive protein | mg∗L−1 | 81 (35–153) | 143 (91–198) | <0.001 |
| Lactate dehydrogenase | U∗L−1 | 423 (32–616) | 641 (472–795) | 0.016 |
| Outcomes | ||||
| ICU admission | N (%) | 78 (7.6) | 96 (27.1) | <0.001 |
| Hospital length of stay | days | 7 (5–11) | 7 (3–11) | 0.001 |
Demographics, comorbidities, laboratory data, and outcomes of survivors and non-survivors. Factor variables are expressed as count (%) and tested with chi-square test, continuous variables as median (IQR) and tested with Kruskal–Wallis test. PaO2, oxygen partial pressure, arterial; PaCO2, carbon dioxide partial pressure, arterial; FiO2, inspired fraction of oxygen; ICU, intensive care unit.