TABLE I.

Bubbles Task Decision Tree Performance by Location and Feature Set with Snake and Speech Task Performance on internalizing diagnostic status

Task	Feature Set	Data	ACC	SEN	SPE	AUC
B	Initial	Head N=48	0.58	0.43	0.65	0.47
	End		0.71	0.57	0.76	0.77
	Initial+Motion		0.52	0.36	0.59	0.39
	End+Motion		0.75	0.64	0.79	0.81
B	Initial	Waist N=54	0.56	0.39	0.64	0.70
	End		0.46	0.22	0.58	0.29
	Initial+Motion		0.46	0.33	0.53	0.36
	End+Motion		0.52	0.11	0.72	0.29
Sn	-	Waist N=62	0.81	0.67	0.88	0.85
Sp	-	Audio N=42	0.80	0.54	0.93	0.75

ACC=Accuracy, SEN=Sensitivity, SPE=Specificity, AUC=Area under the receiver operating characteristic (ROC) curve, B=Bubble Task, Sn=Snake Task, Sp=Speech Task. Head and Waist refer to IMU data sampled from those locations. Performance characteristics of models that outperform random chance in permutation testing are bolded.