TABLE 1

Patient demographics

	Non-diseased control	Idiopathic pulmonary fibrosis
Subjects n	14	20
Age years, mean±sd	48±15	63±7^#
Sex, male, n (%)	5 (50)	13 (65)
Smoking history, n (%)	6 (50)	11 (55)
Forced vital capacity % predicted, mean±sd	n/a	52±16
Transfer limit of carbon monoxide % predicted, mean±sd	n/a	27±11

^#: IPF patients were significantly older than NDC donors, p=0.004, Welch's t-test.