Table 1 Baseline characteristics
|  | Men, n = 71 | Women, n = 44 |
|---|---|---|
Demographics | ||
 Age, years | 69 (10) | 66 (9) |
 Height, cm | 169 (9) | 170 (8) |
 Weight, kg | 79 (15) | 82 (16) |
 Body mass index, kg/m2 | 28 (4) | 28 (6) |
 Ever smoker | 48 (68%) | 25 (57%) |
 Smoked pack-years | 23 (14–37) | 10 (4–17) |
ILD severity | ||
 FVC, %-predicted | 77 (17) | 72 (22) |
 DLCO, %-predicted | 52 (16) | 49 (17) |
 Dyspnea (UCSD SOBQ) | 34 (22–54) | 41 (23–58) |
 Composite Physiologic Index | 45 (36–54) | 48 (36–58) |
Prednisone use | ||
 Current | 7 (10%) | 9 (21%) |
 Ever | 12 (17%) | 17 (39%) |
 Dose > 10 mg daily | 3 (4%) | 1 (2%) |