Demographic, physiological and laboratory data according to treatment groups
| only oxygen (1) N=53 | NHF/CPAP/NIV (2) N=17 | invasive MV (3) N=8 | |
| Age | 65±15 | 62±13 | 73±9 |
| BMI | 29.4±5.2 | 29.6±5.1 | 29.1±2.5 |
| LOS (days) | 10.1±6.7(2,3) | 19.3±11.8(1,3) | 34±26.9(1,2) |
| temperature °C | 38.3±1(2) | 39.1±0.9 (1) | 39.1±0.5 |
| SaO2 (%) | 93.1±3.7(3) | 91.6±6(3) | 85.4±10.6 (1,2) |
| respiratory rate /min | 20.6±4.4(2) | 25.7±6.7 (1) | 23.5±7.6 |
| heart rate /min | 90±20 | 99±16 | 95±21 |
| RR systolic (mmHg) | 118±21 | 110±22 | 103±23 |
| RR diastolic (mmHg) | 69±11 | 68±10 | 63±13 |
| Hemoglobin nadir (mg·dL−1) | 12.4±1.9 | 12.1±2 | 11±2.4 |
| Leucocytes nadir /µL | 5745±2732 | 5724±2602 | 5512±1629 |
| Lymphocytes nadir/µL | 986±2015 | 553±262 | 469±342 |
| LDH max (U·L−1) | 405±129(2,3) | 562±260(1,3) | 741±190(1,2) |
| BNP max (pg·mL−1) | 1773±3086 | 669±895(3) | 5258±7659(2) |
| CRP max (mg·dL−1) | 10.9±7.1(2,3) | 21.6±9.2(1) | 26.4±12.3(1) |
| PCT max (ng·mL−1) | 0.9±2(3) | 0.8±1.2(3) | 3±2.9(1,2) |
| Creatinine max (mg·dL−1) | 1.25±0.62(3) | 1±0.3(3) | 2.6±1.4(1,2) |
| D-Dimer max (ng·mL−1) | 1530±1575(3) | 2698±2464 | 6574±5321(1) |
| Troponin max (µg·L−1) | 28.5±39(3) | 25.9±33.1(3) | 467±1047(1,2) |
| PO2 nadir (mmHg) | 54.5±11 | 47.8±10.5 | 45.9±6.8 |
LOS: length of (hospital) stay; SaO2: oxygen saturation; RR: blood pressure; LDH: lactate dehydrogenase; BNP: brain natriuretic peptide; CRP: C-reactive protein; PCT: procalcitonin; PO2: partial pressure of oxygen; nadir: lowest measured value; max: maximal measured value. Number in brackets indicate significant differences to the respective column (p<0.05).