Table 5.

Univariable and multivariate analysis for LLNM.

	Univariate analysis			Multivariate analysis
Risk factors	LLNM+	LLNM−	P value	P value	OR (95% CI)
Age at diagnosis (years)			0.134
<55	93	723
≥55	24	267
Gender			0.429
Female	84	744
Male	33	246
Tumor size (mm)			<0.001
≤5	15	369		<0.001
>5, ≤10	21	345		<0.002	13.165 (6.177–28.060)
>10, ≤20	51	243		<0.003	11.946 (5.909–24.151)
>20	30	33		<0.004	4.917 (2.614–9.250)
Multifocal neoplasms			0.958
Positive	24	201
Negative	93	789
Bilateral neoplasms			0.109
Positive	24	147
Negative	93	843
Extrathyroidal extension			0.006	0.445
Positive	21	96
Negative	96	894
Hashimoto thyroiditis			0.503
Positive	18	177
Negative	99	813
CLNM			<0.001	<0.001	5.463 (3.264–9.143)
Positive	96	357
Negative	21	633

CLNM: central lymph node metastasis; LLNM: lateral lymph node metastasis.