Radiomics Analysis of Lymph Nodes with Esophageal Squamous Cell Carcinoma Based on Deep Learning

Table 1

Demographic statistics of patients in the training cohort and test cohort.

Variable	Training cohort				Test cohort
	LNM− (n = 108)	LNM+ (n = 108)	χ^2/Z		LNM− (n = 46)	LNM+ (n = 46)	χ^2/Z
Sex			4.256	0.039			2.841	0.092
Women	27	15			15	8
Men	81	93			31	38
Age			−0.543	0.587			−0.754	0.451
Mean	60.8	60.1			61.9	61.0
Median	61.5	61			64.0	61.0
Range	29.0∼82.0	37.0∼82.0			42.0∼85.0	45.0∼82.0
SD	9.0	8.96			9.0	8.4

LNM, lymph node metastasis; +, positive; −, negative; SD, standard deviation.