Table 2. Factors predicting lymph node metastasis in clinical stage IA NSCLC.
| Parameters | OR | P value | 95% CI |
|---|---|---|---|
| Sex | 3.34 | 0.012 | 1.31–8.56 |
| Age group | 0.84 | 0.247 | 0.72–2.08 |
| Smoking history | 14.12 | <0.001 | 5.71–34.90 |
| Tumor location | 0.88 | 0.301 | 0.68–1.13 |
| CT characteristics | 3.34 | 0.001 | 1.59–6.99 |
| Tumor size | 1.90 | <0.001 | 1.36–2.65 |
| Histologic type | 1.99 | 0.064 | 0.96–4.15 |
| Differentiation | 2.25 | 0.013 | 1.18–4.27 |
| LVI | 58.45 | <0.001 | 21.89–157.15 |
| VPI | 48.37 | <0.001 | 15.86–147.52 |
NSCLC, non-small cell lung cancers; VPI, visceral pleural invasion; LVI, lymphovascular invasion; OR, odds ratio.