Table 1. Clinical information for the training and validation samples.

Variable	Training set	Validation set
Patients with clinical information
No. of Patients	53	50
Age (yr)	53–85	51–87
Gender	Female (n = 12)	Female (n = 10)
	Male (n = 41)	Male (n = 40)
Tumor Stage	Stage III (n = 21)	Stage III (n = 19)
	Stage IV (n = 32)	Stage IV (n = 31)
Normal controls with no cancer history
No. of Samples	52	50
Age (yr)	53–85	51–87
Gender	Female (n = 11)	Female (n = 10)
	Male (n = 41)	Male (n = 40)