Optimal surgical extent of lateral and central neck dissection for papillary thyroid carcinoma located in one lobe with clinical lateral lymph node metastasis

Table 2 Statistical analysis of factors the related to multiple level lateral compartment lymph node metastases

	*P-value*
Factors	Univariate analysis	Multivariate analysis
Gender	0.238	0.299
Age (45≤)	0.461	0.704
Stage	0.489	0.752
Multiplicity	0.363	0.050
Location of primary tumor (upper third or lower two-thirds)	0.638	0.670
Size of primary tumor	0.047	0.049
Minimal extrathyroidal extension	0.483	0.288
Maximal extrathyroidal extension	0.203	0.052
Lymphovascular invasion	0.276	0.065
Central neck metastasis	0.317	0.391
No. of metastatic nodes at level VI (≥2)	0.155	0.190

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