Table 1.
Patient characteristics
| Items | Median (range) or number |
|---|---|
| Age | 65 (32–84) |
| Male/female | 60/18 |
| ECOG performance status 0 or 1/2/3 | 72/5/1 |
| Histology (adeno/squamous/others) | 48/18/12 |
| Clinical stage IIB/IIIA and B/IV | 1/14/51 |
| Smoking (heavy/light or never) | 56/22 |
| EGFR mutation/ALK translocation | 9/0 |
| Treatment line second/third or more | 44/34 |
| CT morphological characteristics | |
| Interstitial septal thickening | 17 |
| Peritumoral ground‐glass opacity | 41 |
| Spiculated margin | 16 |
| Air bronchogram | 8 |
| Cavity or necrosis | 16 |
| Adjacent organ invasion | 11 |
| Bulky lymph node (≥2.5 cm) | 11 |
| Accumulation of small lymph nodes | 4 |
N = 78.
Clinical stage was classified using TNM version 7.
Heavy smoker, Brinkman index ≥400; Light or never smoker, Brinkman index <400.