Table 1:

Univariable and multivariable regression models of lymph node metastasis

Variable	Univariable Analysis			Multivariable Analysis
Variable	OR	95% CI	P Value	OR	95% CI	P Value
T-stage
1	Reference			Reference
2	1.13	0.68–1.89	.64	0.97	0.46–2.06	.93
3 or 4	1.59	0.98–2.59	.06	1.86	0.95–3.77	.07
Shortest axial diameter (cm)	41.29	18.09–94.27	<.001	6.69	2.95–17.31	<.001
Longest axial diameter (cm)	6.59	4.12–10.56	<.001
L/S ratio	0.07	0.03–0.14	<.001	0.50	0.22–1.10	.09
Longest longitudinal diameter (cm)	4.87	3.36–7.08	<.001
Conglomeration^a	9.73	3.66–25.84	<.001
Necrosis
No	Reference			Reference
Present	38.99	17.81–85.37	<.001	15.21	6.97–36.60	<.001
Cystic	82.25	24.88–271.89	<.001	21.76	7.51–84.63	<.001
Infiltration^a	75.54	10.26–556.09	<.001
Laterality to primary tumor (ipsilateral vs contralateral)^a	2.27	1.37–3.75	<.001

↵a The reference standard in this study comprised no conglomeration, no infiltration, and no contralateral location to the primary tumor.