Table 2.

The extracted features from each test implemented as the initial pool of features in the development of a machine learning model to predict the risk of fall. Note that Acc 1: acceleration toward the front side of the participant, Acc 2: acceleration toward the right side of the participant, Acc 3: acceleration toward down, Acc 4: resultant acceleration, std: standard deviation, Ang Vel: Angular Velocity, CE: closed eyes.

	Test Battery	Features
Functional Tests	Balance Test (open eyes)	Balance_Thorax Linear Acc 1, Balance_Thorax Linear Acc 2, Balance_Thorax Linear Acc 3, Balance_Thorax Linear Acc 4, Balance_Pelvic Linear Acc 4, Balance_Right Thigh Linear Acc 4, Balance_Left Thigh Linear Acc 4
	Balance Test (closed eyes)	CE_Balance_Thorax Linear Acc 1, CE_Balance_Thorax Linear Acc 2, CE_Balance_Thorax Linear Acc 3, CE_Balance_Thorax Linear Acc 4, CE_Balance_Pelvic Linear Acc 4, CE_Balance_Right Thigh Linear Acc 4, CE_Balance_Left Thigh Linear Acc 4
	Timed Up and Go (TUG)	TUG_Time, TUG_Sit to Stand, TUG_Walk toward Cone, TUG_Turn around the Cone, TUG_Walk toward Chair, TUG_Turn and Sit, TUG_Steps toward Cone, TUG_Steps toward Chair, TUG_Cadence toward Cone, TUG_Cadence toward Chair
	10 Meter Walk Test (10MWT)	10MWT_Walk Time, 10MWT_Step, 10MWT_Cadence, 10MWT_mean Swing Total, 10MWT_std Swing Total, 10MWT_Single Support, 10MWT_Stride Duration, 10MWT_std Stride Duration
	Sit to Stand (STS)	STS_Time, STS_Mean Sit to Stand, STS_Mean Stand to Sit, STS_Thorax Ang Vel, STS_Pelvic Ang Vel, STS_std STS, STS_std Sit to Stand, STS_std Stand to Sit, STS_std Thorax Ang Vel, STS_std Pelvic Ang Vel
	Dual-Task	All the features for the 5 above tests calculated for dual-task tests.
Clinical Information		BMI, Gender, Age, Feel Unsteady, Worried when Walking, Joint Pain, Number Neurological Disease beside Stroke, Fear of Fall (FES Questionnaire)