Age (yrs) | 63.3 ± 15.9 |
Gender (male), n (%) | 15 (53.6) |
Comorbid illnesses, n (%)  Coronary artery disease  Hematological malignancy  Interstitial lung disease  Connective tissue diseases  Chronic lung disease  Solid organ malignancy  Diabetes mellitus  Chronic renal failure  Others | 27 (96.4) 9 (32.1) 7 (25.0) 6 (21.4) 6 (21.4) 5 (17.9) 4 (14.3) 3 (10.7) 3 (10.7) 3 (10.7) |
Immunosuppression, n (%) | 20 (71.4) |
APACHE II scorea | 15.5 (9–27) |
PaO2/FiO2 | 145 ± 50.1 |
The diagnosis of hospitalisation, n (%) | |
 Pneumonia  Alveoler hemorrhage  Respiratory failure (other etiology) | 20 (71.4) 3 (10.7) 5 (17.9) |
ARDS, n (%) | |
 Mild  Moderate  Severe | 5 (17.9) 18 (64.2) 5 (17.9) |
Chest X-ray findings, n (%) | |
 Bilateral alveolar infiltrates  Bilateral interstitial infiltrates  Bilateral interstitial and alveolar infiltrates | 17 (60.7) 7 (25.0) 4 (14.3) |