Table 1.

Population characteristics of COVID-19 patients, healthy subjects, and idiopathic pulmonary fibrosis (IPF).

Subjects	Mean age (years)	Gender
		Male (%)	Female (%)
Healthy subjects	$48.19\pm 14.84$	$21(80.8\%)$	$5(19.2\%)$
IPF patients	$74.96\pm 9.38$	$22(84.6\%)$	$4(15.4\%)$
COVID-19 patients	$58.84\pm 14.87$	$34(66.7\%)$	$17(33.3\%)$