Table 1.

Clinical characteristics of patients with LUAD in each data set.

Characteristics	Training cohort	Testing cohort
	TCGA	GSE68465	GSE30219	GSE72094
n	522	443	293	398
State
Alive	334	207	93	285
Dead	188	236	200	113
Age
≤ 65	241	231	179	118
> 65	262	212	113	280
Unknown	19	0	1	0
Gender
Female	280	220	43	222
Male	242	223	250	176
Stage
Stage I	279	0	0	254
Stage II	124	0	0	67
Stage III	85	0	0	57
Stage IV	26	0	0	15
Unknown	8	443	293	5
T
T1	172	150	166	0
T2	281	251	69	0
T3	47	28	31	0
T4	19	12	21	0
Unknown	3	2	6	398
N (%)
N0	335	299	198	0
N1	98	88	53	0
N2	75	53	30	0
N3	2	0	10	0
Unknown	12	3	2	398
M (%)
M0	353	0	282	0
M1	25	0	8	0
Unknown	144	443	3	398