Table 3. The Clinicopathological features of 243 patients with resected stage IB lung adenocarcinoma in the low- and high-risk groups defined by the radiomics nomogram.
| Characteristic | Low-group, N=129, n (%) | High-group, N=114, n (%) | P value |
|---|---|---|---|
| Age, years | <0.001 | ||
| <65 | 102 (79.1) | 62 (54.4) | |
| ≥65 | 27 (20.9) | 52 (45.6) | |
| Gender | 0.004 | ||
| Female | 86 (66.7) | 55 (48.2) | |
| Male | 43 (33.3) | 59 (51.8) | |
| Smoking | 0.467 | ||
| No | 97 (75.2) | 81 (71.1) | |
| Yes | 32 (24.8) | 33 (28.9) | |
| Surgery types | 0.225 | ||
| Lobectomy | 125 (96.9) | 107 (93.9) | |
| Sub-lobar resection | 4 (3.1) | 7 (6.1) | |
| Histologic subtype | <0.001 | ||
| LPA | 55 (42.6) | 17 (14.9) | |
| APA | 48 (37.2) | 51 (44.7) | |
| PPA | 25 (19.4) | 20 (17.5) | |
| SPA | 0 (0.0) | 18 (15.8) | |
| MPA | 1 (0.8) | 8 (7.0) | |
| Pathologic tumor size, mm, mean ± SD | 21.9±7.8 | 24.8±8.9 | 0.007 |
| Radiomics signature, mean± SD | 0.789±0.336 | 1.373±0.297 | <0.001 |
SD, standard deviation; LPA, lepidic predominant adenocarcinoma; APA, acinar predominant adenocarcinoma; PPA, papillary predominant adenocarcinoma; MPA, micropapillary pattern-predominant adenocarcinoma; SPA, solid predominant adenocarcinoma.