Table 1.

Number of data instances used for training and validation after removal of all-zero value rows

Set	Fold1	Fold2	Fold3	Fold4	Fold5
Train
Positive	15,137	14,382	15,120	14,435	14,918
Negative	70,945	67,020	70,210	73,575	71,941
Total	86,082	81,402	85,330	88,010	86,859
Validation
Positive	3369	4085	3404	4098	3561
Negative	18,132	20,313	18,424	15,344	16,194
Total	21,501	24,398	21,828	19,442	19,755

Held-out testing data comprised of 46,290 instances (7382 positive: 38,907 negative)