Table 2 The demographic and clinical variables of a testing set of patients with malignant SPNs and patients with benign SPNs
| Â | 76 patients with malignant SPNs | 80 patients with benign SPNs |
|---|---|---|
Age, Median (SD) | 67.9 (7.6) | 65.4 (13.7) |
Sex | Â | Â |
   Female | 34 (44.7%) | 30 (37.5%) |
   Male | 42 (55.3%) | 50 (62.5%) |
Nodule size, Median (SD) | 2.5 (1.7) | 1.0 (1.4) |
Pack-years, Median (SD) | 35.5 (23.7) | 35.0 (26.7) |
Stages of NSCLC | Â | Â |
   stage I | 24 (31.6%) |  |
   stage II | 30 (39.5%) |  |
   stage III-IV | 22 (28.9%) |  |
Histological types of NSCLC | Â | Â |
   AC | 40 (52.6%) |  |
   SCC | 36 (47.4%) |  |
Diagnosis of benign SPNs | Â | Â |
   Inflammatory lesion |  | 60 (75.0%) |
   Sarcoid |  | 8 (10.0%) |
   Granuloma |  | 7 (8.8%) |
   Fibrosis |  | 5 (6.2%) |