Table 2.
Clinical characteristics of enrolled control patients.
| All patients (n = 55) | Training set (n = 24) | Testing set (n = 31) | |
|---|---|---|---|
| Age, years, median (IQR) | 48 (34.5, 55) | 50.5 (38.25, 55.25) | 47 (34.5, 54.5) |
| Sex, n (%) | |||
| Men | 31 (56.36) | 12 (50) | 19 (61.29) |
| Women | 24 (43.64) | 12 (50) | 12 (38.71) |
| CT examination indications, n (%) | |||
| Viral pneumonia to be discharged | 7 (12.73) | 0 (0) | 1 (3.23) |
| Pulmonary bullae to be discharged | 2 (3.64) | 2 (8.33) | 0 (0) |
| Tuberculosis | 1 (1.82) | 1 (4.17) | 0 (0) |
| Lower respiratory infection | 3 (5.45) | 1 (4.17) | 2 (6.45) |
| Metastatic lung tumor to be discharged | 7 (12.7) | 5 (20.83) | 2 (6.45) |
| Routine examination before admission | 41 (74.55) | 15 (62.5) | 26 (83.87) |
| CT findings, n (%) | |||
| No obvious abnormality | 44 (80) | 24 | 20 (64.52) |
| Tuberculous lesion | 4 (7.27) | – | 4 (12.90) |
| Suspected neoplastic lesions | 2 (3.64) | – | 2 (6.45) |
| Inflammatory lesions (non-viral) | 2 (3.64) | – | 2 (6.45) |
| Bronchiectasia | 2 (3.64) | – | 2 (6.45) |
| Bullae of lung | 1 (1.82) | – | 1 (3.23) |