3. Multivariate analysis of regional LN metastasis for 14v LN metastasis.

LN	Univariate analysis		Multivariate analysis
	OR	P	OR (95% CI)	P
LN, lymph node; OR, odds ratio; 95% CI, 95% confidence interval.
LN #1	2.738	0.055
LN #3	4.038	0.001
LN #4sb	4.279	<0.001
LN #4d	2.076	0.493
LN #5	5.563	<0.001
LN #6	13.061	<0.001	8.593 (2.989−24.704)	<0.001
LN #7	15.506	<0.001
LN #8a	4.851	<0.001
LN #9	8.145	<0.001
LN #11p	19.500	<0.001	6.640 (2.152−20.493)	0.001
LN #12a	10.220	<0.001	3.050 (0.967−9.623)	0.057