Table 2 The areas under the receiver operating characteristic curve (AUC) for the random forest.

	MDD		CDD		NDD
Logistic regression of interaction and non-linearity terms
Accuracy	0.67		0.67		0.67
AUC	0.50		0.52		0.50
Sensitivity	0.67		0.67		0.67
Specificity	0.46		0.56		0.50
Confusion matrix	40,586	159	39,839	926	39,358	304
Confusion matrix	20,103	137	19,271	1160	19,395	298
Random forest
Accuracy	0.78		0.80		0.75
AUC	0.79		0.82		0.74
Sensitivity	0.80		0.82		0.77
Specificity	0.73		0.73		0.70
Confusion matrix	36,763	3993	36,455	4497	35,685	3951
Confusion matrix	9471	10,758	7782	12,463	10,628	9091

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