Table 4.

Results of MGMT methylation status classification.

Modality	Phase	Classification
		Accuracy	Recall	Precision	F 1 score
CE-T1WI	Training	0.894 ± 0.012	0.906 ± 0.007	0.886 ± 0.018	0.896 ± 0.010
	Validation	0.839 ± 0.046	0.866 ± 0.044	0.823 ± 0.051	0.845 ± 0.045
	Testing	0.804 ± 0.011	0.818 ± 0.033	0.798 ± 0.014	0.808 ± 0.015
FLAIR	Training	0.941 ± 0.056	0.943 ± 0.104	0.947 ± 0.026	0.945 ± 0.081
	Validation	0.885 ± 0.090	0.941 ± 0.105	0.857 ± 0.028	0.889 ± 0.101
	Testing	0.827 ± 0.056	0.852 ± 0.080	0.821 ± 0.022	0.836 ± 0.072

Note: the number in the table referred to the mean ± standard deviation values of 10 cross-validation experiments. CE-T1WI: contrast-enhanced T1-weighted imaging; FLAIR: fluid-attenuated inversion recovery.