Table 2. The 10-fold, 8-fold and 6-fold cross-validation results by the predictor on the benchmark dataset .

Cross-validation	Sen (%)	Spe (%)	Acc (%)	AUC	MCC
10-fold	50.65 ± 0.63	89.67 ± 0.27	80.02 ± 0.27	0.782 ± 0.003	0.432 ± 0.007
8-fold	50.25 ± 0.90	89.65 ± 0.34	79.91 ± 0.27	0.782 ± 0.002	0.428 ± 0.007
6-fold	49.95 ± 0.62	89.70 ± 0.35	79.87 ± 0.35	0.781 ± 0.002	0.426 ± 0.009
LOO	51.07	89.42	79.94	0.782	0.431

The experiments have been executed 30 times for every cross-validation and the results were the mean standard variation.