| Validation set (N = 473) | Additional-test set (N = 3362) | ||
---|---|---|---|---|
Number | Prevalence | Number | Prevalence | |
Primary lung lesion area | ||||
Left | ||||
 Left (huge) | 6/473 | 0.0127 | 143/3362 | 0.0425 |
 Left lower lobe | 84/473 | 0.1776 | 553/3362 | 0.1645 |
 Left upper lobe | 126/473 | 0.2664 | 765/3362 | 0.2275 |
Right | ||||
 Right (huge) | 8/473 | 0.0169 | 171/3362 | 0.0509 |
 Right lower lobe | 90/473 | 0.1903 | 690/3362 | 0.2052 |
 Right middle lobe | 27/473 | 0.0571 | 191/3362 | 0.0568 |
 Right upper lobe | 132/473 | 0.2791 | 849/3362 | 0.2525 |
Lymph node | ||||
N1 | ||||
 Hilar | 142/473 | 0.3002 |  |  |
 Interlobar | 123/473 | 0.2600 |  |  |
 (Peri) Bronchial | 3/473 | 0.0063 |  |  |
 Lobar | 6/473 | 0.0127 |  |  |
N2 | ||||
 Upper paratracheal | 32/473 | 0.0677 |  |  |
 Prevascular, retrotracheal | 36/473 | 0.0761 |  |  |
 Lower paratracheal | 77/473 | 0.1628 |  |  |
 Subaortic | 10/473 | 0.0211 |  |  |
 Para-aortic | 23/473 | 0.0486 |  |  |
 Subcarinal | 65/473 | 0.1374 |  |  |
 Para-oesophageal | 19/473 | 0.0402 |  |  |
N3 | ||||
 Contralateral N1 | 43/473 | 0.0909 |  |  |
 Contralateral N2 | 87/473 | 0.1839 |  |  |
 Supraclavicular | 99/473 | 0.2093 |  |  |
Metastasis | ||||
Intra-thoracic metastasis | Â | Â | Â | Â |
 Malignant pleural effusion | 36/473 | 0.0761 | 342/3362 | 0.1017 |
 Malignant pericardial effusion | 6/473 | 0.0127 | 20/3362 | 0.0059 |
 Pleural nodule | 55/473 | 0.1163 | 542/3362 | 0.1612 |
 Contralateral lung | 61/473 | 0.1290 | 363/3362 | 0.1080 |
 Ipsilateral lung | 65/473 | 0.1374 | 1/3362 | 0.0003 |
 Synchronous lung cancer | 11/473 | 0.0233 | 13/3362 | 0.0039 |
 Lymphangitic meta | 9/473 | 0.0190 | 46/3362 | 0.0137 |
Extra-thoracic metastasis | ||||
 Bone (including rib and sternum) | 119/473 | 0.2516 | 697/3362 | 0.2073 |
 Extra-thoracic lymph node | 82/473 | 0.1734 | 401/3362 | 0.1193 |
 Brain | 14/473 | 0.0296 | 75/3362 | 0.0223 |
 Adrenal | 22/473 | 0.0465 | 177/3362 | 0.0526 |
 Liver | 42/473 | 0.0888 | 62/3362 | 0.0184 |
 Other | 46/473 | 0.0973 | 143/3362 | 0.0425 |