Table 2.

Patient characteristics in the training and external validation cohorts.

	Training cohort	External validation cohort	p value
Age (years)	57.81 ± 10.13	55.86 ± 10.74	0.68
Sex (n, %)			0.65
Male	119 (55.9)	89 (53.0)
Female	94 (44.1)	79 (47.0)
Tumor size (cm)	5.45 ± 1.67	4.87 ± 1.62	0.72
Risk classification (n, %)			0.63
Very low and low risk	96 (45.1)	82 (48.8)
Intermediate risk	60 (28.2)	48 (28.6)
High risk	57 (26.7)	38 (22.6)
Site (n, %)			0.48
Gastric	85 (39.9)	74 (44.0)
Intestinal	128 (60.1)	94 (66.0)

p < 0.05 indicates that difference is statistically significant.