Table 1.

Variable description of wearable data.

Variable	Description	Unit
Daily distance	Daily average distance on walking, jogging, or running	Meter
Daily steps	Daily average steps on walking, jogging, or running	Number
Daily activity time	Daily average time people spend on walking, jogging, or running	Second
Daily resting heart rate (HR)	Daily average heart beats per minute (BPM) while at complete rest (sleeping)	BPM
Daily walking HR	Daily average heart beats per minute while at walk	BPM
Daily sleep duration	Daily average duration while at sleep at night	Minute
Daily deep sleep time	Daily average duration while at deep sleep at night	Minute
Daily light sleep time	Daily average duration while at light sleep at night	Minute
Daily awake time	Daily average duration while awake at night	Minute