Table 2.

Summary of clinical features of definite and probable idiopathic AEP cases at our institution.

Age	53 years old (19–79)
Male	63%
Duration of symptoms	21 days (4–38)
Maximum temperature	37.7 °C (37.2–39.7)
Nadir SpO2	83% (61–86)
White blood cell count on admission (×109/L)	13.2 (7.3–27.8)
Eosinophil count on admission (×109/L)	0.34 (0.01–10.56)
BAL eosinophils	36% (9–87)
Duration of hospitalization	7 days (1–12)
Intubation	25% (1–3 days)
Duration of steroids therapy	60 days (35–285)

All numbers above are median (range) unless otherwise noted.