| Mean±SD | Range |
Duration from IPF diagnosis months | 13.3±11.7 | 3–60 |
Duration of acute symptom before admission days | 13.0±10.7 | 2–30 |
Fever n | 1 | |
Pa,O2/FI,O2 | 183±26.0 | 99–227 |
Bronchoalveolar lavage fluid finding | | |
Macrophages % | 45.6±23.9 | 13–90 |
Lymphocytes % | 28.6±18.5 | 3–48 |
Neutrophils % | 24.7±16.9 | 5–48 |
Eosinophils % | 2.7±3.6 | 1–15 |
WBC×103·mm−3 | 12.2±3.7 | 6.6–17.8 |
C-reactive protein | 12.6±6.0 | 3.5–20.3 |
Corticosteroid pulse therapy n | 6 | |
ICU admission n | 10 | |
Mechanical ventilation n | 9 | |
Mortality within 3 months n | 9 | |
Duration between the AE and death days | 33.2±21.4 | 11–70 |