Table 1.
Baseline Characteristics Among ILD Subtypes
| Demographics | IPF (n = 534) | CTD-Associated ILD (n = 234) | CHP (n = 197) | uILD (n = 297) |
|---|---|---|---|---|
| Center | ||||
| UTSW | 377 (70.6) | 128 (54.7) | 112 (56.9) | 167 (56.2) |
| UCD | 157 (29.4) | 106 (45.3) | 85 (43.2) | 130 (43.8) |
| Age, y | 68.2 ± 10.1 | 57.0 ± 14.6 | 66.3 ± 10.7 | 65.8 ± 11.9 |
| Male sex | 397 (74.3) | 75 (32.1) | 106 (53.8) | 153 (51.5) |
| White race | 460 (86.1) | 143 (61.1) | 167 (84.8) | 232 (78.1) |
| Ever smoker | 342 (64.7) | 102 (43.6) | 89 (45.2) | 161 (54.2) |
| FVC, % predicted | 69.3 ± 18.5 | 68.9 ± 20.3 | 63.9 ± 20.2 | 68.7 ± 20.9 |
| Diffusion capacity, % predicted | 46.6 ± 18.3 | 45.9 ± 18.0 | 46.4 ± 18.8 | 47.3 ± 18.5 |
Data are presented as No. (%) or mean ± SD. CHP = chronic hypersensitivity pneumonitis; CTD = connective tissue disease; ILD = interstitial lung disease; IPF = idiopathic pulmonary fibrosis; uILD = unclassifiable ILD; UCD = University of California at Davis; UTSW = University of Texas Southwestern.