2.

Univariate and multivariate analyses of independent factors correlated with positive No. 5, 6 lymph node metastasis

Variables	Univariate				Multivariate
	No. 5, 6 (+) (N=68)	No. 5, 6 (−) (N=265)	P		OR	95% CI	P
OR, odds ratio; 95% CI, 95% confidence interval.
No. 1			0.173
+	35	112
−	33	153
No. 2			0.286
+	27	87
−	41	178
No. 3			0.058		1.003	0.846−1.262	0.748
+	34	99
−	34	166
No. 4			0.001		4.816	2.491−9.311	<0.001
+	41	56
−	27	209
No. 7			0.105		1.431	0.726−2.819	0.301
+	46	148
−	22	117
No. 8a			0.003		1.337	1.085−1.648	0.006
+	37	59
−	31	206
No. 9			0.268
+	22	68
−	46	197
No. 10			0.191
+	20	58
−	48	207
No. 11			0.011		2.267	1.026−5.007	0.043
+	28	68
−	40	197
No. 12a			0.065
+	20	71
−	48	194