Table 2.
The 14 investigated variables from LDCT text reports. Of these, 12 binary variables were coded as 0/1 for No/Yes to describe the presence of nodule pattern, location, and lung condition. The other two continuous variables were nodule count and size.
| Variable | Coding | Description |
|---|---|---|
| Count | Total nodule counts | |
| Diameter | The diameter of the maximum nodule (cm) | |
| GGO | 0/1 | Presence of ground-glass opacity (GGO) |
| Solid | 0/1 | Presence of solid nodule |
| Part Solid | 0/1 | Presence of partial solid nodule |
| Upper | 0/1 | Presence of nodule at middle lobe |
| Middle | 0/1 | Presence of nodule at upper lobe |
| Lower | 0/1 | Presence of nodule at lower lobe |
| Spiculated | 0/1 | Presence of spiculation feature |
| Fibrotic | 0/1 | Presence of fibrotic pattern |
| Mosaic | 0/1 | Presence of mosaic pattern |
| Calcified | 0/1 | Presence of calcification pattern |
| Pneumothorax | 0/1 | Presence of pneumothorax |
| Pleural Effusion | 0/1 | Presence of pleural effusion |