Table 1.
Baseline characteristics of the full analysis set
| Baseline characteristics | Total (n = 601) | |
|---|---|---|
| Male Sex, n (%) | 365 (60.7) | |
| Age [years], mean (SD) | 64.3 (14.2) | |
| Current smoker, n (%) | 52 (8.7) | |
| Ex-smoker, n (%) | 270 (44.9) | |
| FVC [% predicted], mean (SD) | 76.4 (20.8) | |
| FEV1 [% predicted], mean (SD) | 79.2 (20.0) | |
| DLCO-SB [% predicted], mean (SD) | 54.1 (21.6) | |
| ILD-GAP-Index, n (%) | I | 275 (45.8) |
| II | 164 (27.3) | |
| III | 128 (21.3) | |
| Missing | 34 (5.7) | |
| Time to diagnosis in months, mean (SD) | -38.8 (64.4) | |
| Disease duration at diagnosis in months, mean (SD) | 13.2 (27.4) | |
The reference point of time for time differences is the inclusion date, e.g. time to diagnosis was defined as time date of diagnosis to date of inclusion. SD = standard deviation, FVC = forced vital capacity, FEV1 = forced expiratory volume in 1 s, DLCO = diffusing capacity for carbon monoxide (CO)