Table 3

- Logistic regression to predict the chances of lymph node metastasis.

	Univariate				Multivariate
Factors		95% CI				95% CI
Factors	OR	Lower	Upper	P-value	OR	Lower	Upper	P-value
Female	1
Male	1.5	0.6	3.5	0.36
Height	1.3	0.0	79.286	0.897
Weight	1	1	1.005	0.141
Body mass index	1	0.9	1.015	0.15
Age	1	1	1.022	0.534
Bethesda class 1	1	-	-	-
Bethesda class 2	0.0	0.0	0.159	0.001**
Bethesda class 3	0.0	0.0	0.545	0.015**
Bethesda class 4	-	-	.	0.998
Bethesda class 5	0.1	0.0	1.1	0.059
Bethesda class 6	0.1	0.0	1.579	0.11
Pathology: classical	1	-	-	-
Pathology: follicular	0.3	0.0	1.961	0.191
Pathology: Hurthle cell variant	4.4	0.4	50.002	0.233
Pathology: oncocytic	2.9	0.6	15.209	0.201
Pathology: tall cell	-	-	-	0.998
Thyroiditis	1.6	0.7	3.384	0.248
Multifocal	1.3	0.6	2.838	0.431
Single focus	1	-	-	-
Goitrous thyroid	0.4	0.2	0.852	0.019**	0.151	0.039	0.584	0.006**
ETE	12.4	5.5	27.993	<0.001**	7.724	1.859	32.102	0.005**
ECE	5.3	2.1	13.269	<0.001**	5.897	1.3	26.748	0.021**
Margin	1.9	1.0	3.486	0.036**
LVI	33.5	8.5	133.009	<0.001**	25.817	2.461	270.806	0.007**
Perineural invasion	2.1	0.2	21.575	0.518
Recurrence in the thyroid bed	0.6	0.1	4.827	0.643
Recurrence in lymph nodes	3.2	0.3	31.956	0.317
Residual and received RAI	6.3	2.7	14.625	<0.001**
Residual needed completion surgery	3.8	0.7	20.224	0.123
Preoperative TSH level	1.1	0.9	1.230	0.352
FT4	0.9	0.8	1.06	0.221
FT3	1	0.9	1.1286	0.766
Tumor size (largest in cm)	1.8	0.9	3.859	0.109

LNM: lymph node metastasis, ETE: extrathyroidal extension, ECE: extracapsular extension, LVI: lymphovascular Invasion, RAI: radio-active iodine, TSH: thyroid stimulating hormone, CI: confidence interval, OR: odds ratio,

↵^** Significantly at p<0.05.