Risk factor analysis for predicting cervical lymph node metastasis in papillary thyroid carcinoma: a study of 966 patients

Table 7 The incidence of lateral lymph node metastasis in different sites of lateral cervical compartment

The sites of lateral compartment	Lateral lymph node metastasis		Positive rate	χ ²	P value
The sites of lateral compartment	No	yes	Positive rate	χ ²	P value
				123. 60	< 0.001
Level II	122	89	42.2%		< 0.001^a, < 0.001^b, 0.918^c
Level III	70	141	66.8%		< 0.001^d, < 0.001^e, < 0.001^f
Level IV	69	142	67.3%
Level V	166	45	21.3%

^aLevel II vs. Level III, ^bLevel II vs. Level IV, ^cLevel III vs.Level IV, ^dLevel II vs. Level V,
^e Level III vs. Level V, ^fLevel IV vs. Level V

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