Table 1.
Relationships of pathological central node metastasis with clinicopathological features of 4301 cN0M0 PTC patients
| Pathological central node metastasis | ||||
|---|---|---|---|---|
| Variables | No | Yes | Total | p value |
| Age, years | ||||
| ≥55 | 843 (49%) | 880 (51%) | 1723 | <0.0001 |
| <55 | 910 (35%) | 1668 (65%) | 2578 | |
| Gender | ||||
| Male | 116 (30%) | 273 (70%) | 389 | <0.0001 |
| Female | 1637 (42%) | 2275 (58%) | 3912 | |
| Extrathyroid extension | ||||
| Yes | 132 (32%) | 284 (68%) | 416 | <0.0001 |
| No | 1621 (42%) | 2264 (58%) | 3385 | |
| Tumor size | ||||
| >4 cm | 73 (23%) | 246 (77%) | 318 | <0.0001 |
| 3.1–4 cm | 116 (26%) | 323 (74%) | 439 | |
| 2.1–3 cm | 285 (31%) | 638 (69%) | 923 | |
| 1.1–2 cm | 734 (44%) | 933 (56%) | 1667 | |
| ≤1 cm | 545 (57%) | 408 (43%) | 953 | |