Table 2.

Characteristics of engagement with Happify program.

		Value, mean (SD)	Value, range
Number of in-app assessments		4.17 (2.63)	2-13
Days between first and last assessments		104.54 (46.55)	42-182
Number of days between assessments		49.89 (38.52)	13.75-177
Activities completed before first assessment		1.22 (1.75)	0-19
Activity between first and last assessment
	Total activities completed	43.35 (87.80)	1-786
	Track activities completed	35.47 (67.31)	0-415
	Instant play activities completed	7.88 (37.56)	0-588
	Days between first and last activity	92 (63.20)	1-152
	Active daysa	19.36 (27.16)	1-152

^aAny day when a user logged on to the Happify platform and completed an activity but does not include days when the user may have logged on without completing an activity (including completing the assessment).