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| Variables | Odds ratio | 95% CI | P value |
|---|---|---|---|
| Tumor size | 2.544 | 1.271–5.092 | 0.008 |
| GGO status (ratio) | 3.272 | 1.759–6.089 | <0.001 |
| CEA level | 9.672 | 3.805–24.584 | <0.001 |
CEA, carcinoembryonic antigen; GGO, ground-glass opacity; CI, confidence interval.
