Table 3. Independent Predictive Factors of Central Lymph Node Metastasis in Multivariate Analysis .

Factors	OR	95% CI	P Value
Age at diagnosis	0.29	- 2.49 − - 0.29	0.016
Gender	1.22	- 0.99 − 1.55	0.025
Intra-thyroidal localization	1.64	- 0.17 − 1.09	0.37
Tumor subtype	0.44	- 1.67 − - 0.21	0.007
Lymphovascular invasion	2.59	4.47 – 7.9	0.001
Extracapsular invasion	11.17	1.15 – 20.53	0.003

OR, odds ratio; CI, confidence interval.