Table 1 Clinical characteristics of the 338 study patients
Clinical parameters | Number |
|---|---|
Sex (male) (n,%) | 337 (99.7) |
Mean age (SD) | 20.4 ± 1.4 |
Smoking history | |
Ever smoker | 336 (99.4) |
Never smoker | 2 (0.6) |
Cigarette smoking days | 26.2 ± 25.4 |
WBC | 14,359.3 ± 5562.0 |
Peripheral eosinophil (%) | 4.1 ± 5.7 |
BAL eosinophil (%) | 46.7 ± 17.7 |
CRP | 9.4 ± 5.3 |
Hospital days | 10.5 ± 4.6 |
ICU admission | 126 (37.3) |
ICU admission days (n = 126) | 2.0 ± 1.3 |
Mechanical ventilation | 3 (0.9) |
HFNC | 9 (2.7) |
Oxygen supply days | 2.8 ± 1.5 |
Chest Radiograph Findings | |
Bilateral infiltrates | 318 (94.1) |
No effusion | 122 (36.1) |
Unilateral effusion | 41 (12.1) |
Bilateral effusion | 173 (51.2) |
Initial treatment | |
No steroid treatment | 14 (4.1) |
Oral corticosteroid | 64 (18.9) |
Intravenous corticosteroid | 260 (76.9) |
Steroid treatment duration (n = 321) | 14.2 ± 4.3 |