Table 6.
Multivariate analysis of risk factors for lateral lymph node metastasis
| OR | 95%CI | P value | |||
|---|---|---|---|---|---|
| Lower | Upper | ||||
| Age (years) | 0.447a | ||||
| ≤35 | 1.64 | 0.87 | 3.09 | 0.125 | |
| 35–45 | 1.26 | 0.66 | 2.40 | 0.478 | |
| 45–55 | 1.46 | 0.78 | 2.75 | 0.236 | |
| > 55 | 1 | ||||
| Tumor size(cm) | 0.060a | ||||
| ≤0.5 | 1 | ||||
|
0.5–1.0 1.0–2.0 |
1.57 1.94 |
0.67 0.84 |
3.63 4.51 |
0.297 0.121 |
|
| > 2.0 | 3.03 | 1.24 | 7.44 | 0.015 | |
| Extrathyroidal extension | (yes vs. no) | 1.26 | 0.78 | 2.02 | 0.350 |
| The number of CLNM | < 0.001a | ||||
| 0 | 1 | ||||
| 1–3 | 2.96 | 1.87 | 4.70 | < 0.001 | |
| > 3 | 9.27 | 4.38 | 19.63 | < 0.001 | |
a means the global p-values; CLNM central lymph node metastasis