Comparison of prediction models for malignant character of pulmonary nodules identified by chest computed tomography (CT)
| Brock model | Herder model | Mayo Clinic model | |
| Patient characteristics | |||
| Age | + | + | + |
| Sex | + | ||
| Smoking history | + | + | |
| Family history of lung cancer | + | ||
| Emphysema | + | ||
| Previous history of extrathoracic cancer | + | + | |
| Nodule characteristics | |||
| Size | + | + | + |
| Upper lobe location | + | + | + |
| Type (solid/part-solid/GGO) | + | ||
| Spiculated margins | + | + | + |
| Nodule count | + | ||
| FDG-PET/CT | + | + | |
GGO: ground-glass opacity; FDG: fluorodeoxyglucose; PET: positron emission tomography.