Clinical characteristics of the patients in the training and test cohorts
| Training cohort | Test cohort | |
| Images | 6413 | 4669 |
| Patients | 212 | 122 |
| Chronological age, years | 69 (23–93) | 72 (21–95) |
| Male | 137 (64.6) | 75 (61.5) |
| Smoking history | ||
| ≤1 pack-year | 62 (29.2) | 39 (32.0) |
| >1 pack-year | 150 (70.8) | 83 (68.0) |
| Disease | ||
| Lung cancer | 125 (59.0) | 64 (52.5) |
| Interstitial pneumonia | 15 (7.1) | 25 (20.5) |
| Infection | 31 (14.6) | 20 (16.4) |
| Allergy | 2 (0.9) | 2 (1.6) |
| Other | 39 (18.4) | 11 (9.0) |
| Location of disease | ||
| Right | 95 (44.8) | 56 (45.9) |
| Left | 72 (34.0) | 30 (24.6) |
| Both lungs | 45 (21.2) | 36 (29.5) |
Data are presented as n, median (range) or n (%).