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Spearman correlation analysis of serum selenium levels and pathological features in PTC patients.
| Subjects | Serum selenium | |
|---|---|---|
| r | p | |
| TNM staging-T | -0.048 | 0.436 |
| TNM staging-N | -0.015 | 0.811 |
| Tumor size (cm) | 0.016 | 0.795 |
| Metastatic lymph nodes | -0.121 | 0.048* |
