Table 1.

Clinical characteristics of the colon adenocarcinoma samples in the training and validation datasets

Clinical characteristics	Training dataset (N=574)	Validation dataset (N=310)
Age at pathologic diagnosis (years, mean ± sd)	66.89 ± 13.22	65.73 ± 12.71
Gender (male/female)	317/257	169/141
Pathologic stage (1/2/3/4)	41/267/206/60	51/118/88/43/10
Pathological T (1/2/3/4/–)	13/47/373/118/23	8/55/212/34/1
Pathological N (0/1/2/3/–)	309/134/99/6/26	180/77/53/0/0
Pathological M (0/1/-)	491/61/22	226/43/41
Tumor location (distal/proximal)	348/226	–
Chemotherapy (yes/no)	239/319/16	–
Tumor recurrence (yes/no)	179/375	66/244
Recurrence free survival time (months, mean ± sd)	49.79 ± 40.76	29.66 ± 25.46