Table 2.

Engagement metric comparisons across cohorts.

Measures		Kruskal Wallis test statistics			Cohorts, median (95% CI)
		n (df)	H	P value	Cohort 1	Cohort 2.1	Cohort 2.2	Cohort 3
Usage measures
	Weeks engaged	424 (3)	12.573	.006	1.1 (0.6, 2.2)	1.4 (0.7, 2.1)	2.7 (1.2, 3.7)	3.6 (2.1, 4.1)
	Total usage (hours:minutes:seconds)	424 (3)	22.077	<.001	1:15:20 (0:48:29, 1:43:59)	1:28:30 (1:06:23, 1:55:00)	1:35:16 (1:22:21, 1:50:12)	1:52:15 (1:28:32, 2:22:55)
	Total time key activities (hours:minutes:seconds)	424 (3)	48.392	<.001	0:42:51 (0:40:23, 0:49:19)	0:51:24 (0:45:00, 0:59:09)	1:10:12 (0:58:49, 1:22:05)	1:30:01 (0:52:00, 1:48:00)
	Goals completed, n	424 (3)	30.426	<.001	1 (0, 2)	1 (1, 2)	2 (0, 3)	3 (2, 4)
	Active sessions, n	424 (3)	61.208	<.001	15 (6, 20)	3 (1, 4)	3 (3, 4)	30 (17, 24)
Intensity of use measures
	Average duration per session (hours:minutes:seconds)	424 (3)	77.057	<.001	0:02:25 (0:01:28, 0:05:06)	0:21:41 (0:05:01, 0:30:00)	0:27:27 (0:24:58, 0:31:11)	0:04:55 (0:03:25, 0:08:22)
	Per protocol percentage	424 (3)	28.527	<.001	12.7 (11.4, 16.9)	25.3 (14.4, 34.4)	33.5 (27.7, 43.0)	38.4 (25.5, 65.6)
	Percentage videos watched	424 (3)	39.164	<.001	22.0 (13.0, 26.0)	35.5 (23.0, 48.0)	55.0 (46.0, 70.0)	70.00 (47.5, 83.5)