Prophylactic bilateral central neck dissection should be evaluated based on prospective randomized study of 581 PTC patients

Table 3 Multi-variable analysis for unilateral PTC with contralateral central lymph node

variable	B	Standard error	Wald	df	Significance	OR value	95.0% C.I.for EXP(B)
variable	B	Standard error	Wald	df	Significance	OR value	The lower limit	The upper limit
Male/female	0.434	0.509	0.637	1	0.436	1.527	0.535	4.211
Pathological T classification (<T3/T3)	0.865	0.538	2.588	1	0.112	2.413	0.816	6.925
lesion located in the lower pole	0.502	0.566	0.692	1	0.521	1.622	0.513	4.252
Unifocal/Multifocal	0.425	0.478	0.611	1	0.476	1.498	0.520	4.328
Pathological tumor size (<10/≥10 mm)	1.411	0.476	7.302	1	0.002	3.337	1.502	9.877
Tumor side LN (+/−)	1.334	0.589	4.523	1	0.001	3.774	1.109	10.882

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