Table 2.

Factors Associated with Locoregional Lymph Node Metastasis

Factor	Univariate analysis			Multivariate analysis
	OR (95% CI)	p-value		OR (95% CI)	p-value
Age	0.955 (0.905–1.007)	0.090		0.965 (0.907–1.027)	0.263
Sex (male)	3.636 (0.905–14.609)	0.069		4.946 (0.851–28.730)	0.075
Tumor size	1.427 (1.064–1.914)	0.018		1.327 (0.972–1.811)	0.075
Ki-67 index (≥3%)	4.643 (1.241–17.368)	0.023		6.279 (1.212–32.528)	0.029

p-value was calculated by univariable and multivariable logistic regression analysis.

OR, odds ratio; CI, confidence interval.