Table 1.
Patient characteristics of the entire study cohort
| Study cohort (n = 76) | Replication cohort (n = 18) | p value | |
|---|---|---|---|
| Age at first CT, years | |||
| Mean age | 65.10 ± 8.73 | 67.67 ± 12.39 | .305 |
| Age range | 34–82 | 29–83 | .. |
| Gender | |||
| Female | 19 | 8 | .101 |
| Male | 57 | 10 | .101 |
| Lung function test | |||
| FVC (mean ± sdt) | 81.63 ± 18.96 | 77.64 ± 27.17 | .465 |
| DLCO (mean ± sdt) | 54.27 ± 15.60 | 47.32 ± 16.75 | .097 |
| Unknown | 3 | 4 | .. |
| CT pattern | |||
| Definite UIP | 32 | 7 | .803 |
| Probable UIP | 30 | 10 | .215 |
| Indeterminate for UIP | 5 | 1 | .873 |
| Inconsistent with UIP | 9 | 0 | .124 |
| Smoking status | |||
| Active smoker | 1 | 2 | .033 |
| Former smoker | 46 | 11 | .960 |
| Never smoker | 25 | 4 | .379 |
| Unknown | 4 | 1 | .960 |
| Survival outcome | |||
| Alive | 20 | 4 | .719 |
| Dead | 54 | 14 | .569 |
| Unknown | 2 | 0 | .484 |