Table 2.

Risk factors for recurrent idiopathic pulmonary hemosiderosis.

Variables	Healed or improved(n = 22)	Recurrent(n = 10)	P value
Age of onset of symptoms (months)	65.45 ± 43.14	66.10 ± 38.67	0.968
Age at diagnosis (months)	72.77 ± 44.22	83.30 ± 45.90	0.542
History of hemoptysis at presentation	14	4	0.267
Dyspnea	5	3	1.000
Hemoglobin (g/L)	81.09 ± 24.01	72.30 ± 24.55	0.348
Elevated bilirubin	6	7	0.049