TABLE 2.
Risk factors of all models for lymph node metastasis in lung cancer
| Variable | Model 2 | ||
|---|---|---|---|
| ß | Odds ratio (95% CI) | p‐value | |
| SURmax‐Lea | 1.875 | 1.438–2.445 | <0.0001 |
| LN short axis | 1.214 | 1.042–1.415 | 0.013 |
| Tumor volume | 1.023 | 1.001–1.045 | 0.042 |
| Tumor location | 2.130 | 1.127–4.023 | 0.011 |
| Suspicious LN metastasis | 2.265 | 1.204–4.259 | 0.015 |
| Gender | 1.955 | 1.00–3.822 | 0.048 |
| C‐index | |||
| Primary cohort | 0.830 | 0.774–0.886 | 0.001 |
| Validation cohort | 0.875 | 0.782–0.948 | 0.001 |
Note: ß is the regression coefficient. p‐value, odds ratio and confidence interval were derived from the multivariable regression. In net reclassification index and integrated discrimination improvement analysis, model 1 was regard as reference and compared to other four models.
Abbreviations: CI, confidence interval; LN, lymph node; SUVmax, maximum standardized uptake value.