A novel tool for predicting the risk of central lymph node metastasis in patients with papillary thyroid microcarcinoma: a retrospective cohort study

Table 7 Comparison of positive rates in CLNM with different risk stratification in the validation cohort

	Positive rate of CLNM	X²	P value	SMD
Low-score-risk	8 (15.09%)a	10.607	0.005	0.586
Medium-score- risk	23 (31.64%)b
High-score- risk	18 (46.15%)b

Note: There is no significantly statistical difference between the two groups with the same letter

ISSN: 1471-2407