Machine learning-based Radiomics analysis for differentiation degree and lymphatic node metastasis of extrahepatic cholangiocarcinoma

Table 2 Patient characteristics

Characteristics	Training cohort			Testing cohort			Training cohort			Testing cohort
Characteristics	LNM	Non-LNM	P	LNM	Non-LNM	P	High	Medium-low	P	High	Medium-low	P
Sex			0.823			0.180			0.502			0.655
Male	12	29		2	11		21	22		2	9
Female	11	28		2	5		11	26		2	7
Age (years)	53.4 ± 11.0	57.7 ± 9.7	0.092	53.8 ± 12.0	60.8 ± 7.7	0.159	56.6 ± 7.7	57.2 ± 11.9	0.814	62.8 ± 9.3	56.0 ± 7.8	0.151
Lesion size (cm)	1.9 ± 0.9	1.3 ± 0.8	0.008	1.6 ± 0.3	1.2 ± 0.5	0.154	1.4 ± 1.0	1.5 ± 7.6	0.443	1.1 ± 0.4	1.4 ± 0.5	0.254

ISSN: 1471-2407