TABLE 6. Data Numbers and Performances for 4-Fold Cross Validation.

	Validation set 1st fold	Validation set 2nd fold	Validation set 3rd fold	Validation set 4th fold	Average
Non-RVH Group	300	299	312	310	–
RVH Group	40	41	28	30	–
Total	340	340	340	340	–
Prevalence Rate	11.8%	12.1%	8.2%	8.8%	–
F1-score	30.8%	38.0%	25.0%	25.0%	29.7%
ROC AUC	0.712	0.773	0.717	0.671	0.718
PR AUC	0.215	0.335	0.287	0.207	0.261