Novel Circulating Tumour Cell-Related Risk Model Indicates Prognosis and Immune Infiltration in Lung Adenocarcinoma

Table 1

Clinical characteristics of patients in the training cohort and validation cohort.

Variables	Training cohort		Validation cohorts
	TCGA(n = 447)		GSE72094(n = 328)		GSE42127(n = 132)
	No.	%	No.	%	No.	%
Age	—	—	—	—	—	—
Median (years)	70.0	—	69.7	—	65.8	—
< 60	128	28.6	46	14.0	35	26.5
≥ 60	319	71.4	282	86.0	97	73.5
Gender	—	—	—	—	—	—
Male	207	46.3	156	47.6	67	50.8
Female	240	53.7	172	52.4	65	49.2
Stage	—	—	—	—	—	—
WHO I	259	57.9	218	66.5	89	67.4
WHO II	103	23.1	53	16.2	22	16.7
WHO III	64	14.3	46	14.0	20	15.1
WHO IV	21	4.7	11	3.3	1	0.8