Prediction of Cervical Lymph Nodes Metastasis in Papillary Thyroid Carcinoma (PTC) Using Nodal Staging Score (NSS)

Table 2

Incidence of lymph node metastasis in patients with PTC and its adjustment results.

	Incidence of lymph node metastasis
	Incidence of the sample (%)	The adjusted incidence (%) ^#
Gender
Male	63.2	77.6
Female	43.3	53.8
Age
≤45	52.0	63.2
>45	42.5	53.8
Extrathyroidal invasion
Negative	39.5	49.5
Positive	75.2	90.5
Multifocal
No	49.3	60.6
Yes	45.1	56.3
Tumor size
≤1 cm	32.3	40.2
1-2 cm	47.8	59.1
2-4 cm	55.8	68.8
> 4 cm	64.3	76.0
T stage
T1	33.9	42.4
T2	47.4	58.3
T3	66.6	81.5
T4	79.1	95.7

Note: #: In consideration of the possibility of false-negative lymph node metastasis, the incidence of lymph node metastasis calculated directly was revised.