Table 8. Summary of the validation of the ABE scoring systems.

Score group		HR (95% CI)	P-value	Concordance
ABE4 in training cohort				0.686 (0.637, 0.735)
	Low (0)
	Low-intermediate (I)	4.15 (1.26, 13.66)	0.0191
	High-intermediate (II)	7.75 (2.42, 24.78)	0.0006
	High (III)	18.86 (5.78, 61.58)	<0.0001
ABE4 in validation cohort				0.656
	Low (0)
	Low-intermediate (I)	5.3 (0.68, 41.05)	0.1105
	High-intermediate (II)	7.18 (0.95, 54.40)	0.0564
	High (III)	13.36 (1.72, 103.53)	0.0131
ABE3 in training cohort				0.676 (0.631, 0.721)
	Low
	Intermediate	4.75 (2.19, 10.30)	<0.0001
	High	13.33 (5.93, 29.95)	<0.0001
ABE3 in validation cohort				0.650
	Low
	Intermediate	2.12 (0.79, 5.67)	0.1357
	High	4.81 (1.73, 13.38)	0.0026

Results of the univariate 3-year overall survival analysis in the training and the validation data sets: hazard rate (HR) with its 95% CI and P-value based on the Cox regression model. Reference group in all regression models is the lowest risk group. The measure of concordance compares the model discrimination.