Table 4. Multivariate analysis of the factors associated with the pLN1 group.

	univariate analysis		Multivariate analysis
	OR (95% CI)	p	OR (95% CI)	p
Male sex	6.48 (1.73-27.02)	0.006	6.12 (0.89-42.1)	0.066
Microcalcification (US)	3.93 (1.37-11.25)	0.011	1.16 (1.05-1.29)	0.004
Nodule size, mm (US)	1.10 (1.02-1.18)	0.013	10.11 (1.97-51.85)	0.006
BRAFV600E	9.75 (2.48-38.44)	0.001	6.41 (1.25-32.8)	0.026
OR: Odd ratio, CI: Confidence interval, US: Ultrasonography.