Table 1.

Characteristics of the subjects.

		ILD in HRCT
	Total	Yes∗	No
Number of subjects	60	34	26
Age (yr)	68.9 ± 13.0	72.2 ± 11.4	64.5 ± 13.5
Gender (male/female)	39 / 21	24 / 10	15 / 11
BMI	22.1 ± 4.0	21.8 ± 3.5	22.5 ± 4.6
Smoking (Yes / No)	36 / 24	21 / 13	15 / 11
FVC (percent predicted)		88.1 ± 21.6	NA
DLco (percent predicted)		57.2 ± 20.2	NA
Subjects with ILD	34	34	0
CVD-ILD	12	12	0
IIPs	10	10	0
HP	4	4	0
Other ILD	8	8	0
Subjects without ILD	26	0	26
COPD or asthma	8	0	8
Lung tumor	7	0	7
Lung nodule	5	0	5
Other	6	0	6