Predicting central lymph node metastasis in patients with papillary thyroid carcinoma based on ultrasound radiomic and morphological features analysis

Table 1 Clinical and ultrasound morphological features of the patients

	Training set			Validation set
	with CLNM (n = 115)	without CLNM (n = 97)	P	with CLNM (n = 45)	without CLNM (n = 38)	P
Gender			0.018^*			0.438
Male	21	7		10	11
Female	94	90		35	27
Age	42.93 ± 11.95	43.43 ± 9.74	0.781	42.42 ± 12.00	44.61 ± 10.26	0.528
Microcalcification			0.001^*			< 0.001^*
Yes	91	57		38	18
No	24	40		7	20
Color doppler flow imaging			< 0.001^*			0.014^*
Avascularity	21	55		8	11
Mainly peripheral vascularity	45	17		14	20
Mainly central vascularity	37	18		19	7
Mixed vascularity	12	7		4	0
Location			0.510			0.143
Up	22	25		16	9
Middle	44	34		18	12
Down	49	38		11	17
Morphology			< 0.001^*			< 0.001^*
Regular	20	57		8	22
Irregular	95	40		37	8
Boundary			< 0.001^*			0.031^*
Circumscribed	19	39		7	9
Ill-defined	42	40		16	21
Irregular margin	54	18		22	8
Length diameter	1.16 ± 0.71	0.72 ± 0.45	< 0.001^*	1.20 ± 0.75	0.63 ± 0.24	< 0.001^*

ISSN: 1471-2342