Table 1.

Mean logins and mean use of features available for all participants per lesson.

Lesson No. (n)	Login,	Feedbacka, mean (SD)	Uniquebfeedback, mean (SD)	MFcstarted, mean (SD)	Unique MF started,	Unique MF downloaded, mean (SD)	Success stories, mean (SD)	Unique success stories, mean (SD)
1 (206)	4.40 (3.05)	2.04 (2.34)	1.36 (1.00)	1.75 (1.59)	0.88 (0.33)	0.50 (0.50)	1.67 (1.53)	1.28 (0.78)
2 (194)	4.12 (2.82)	2.10 (2.37)	1.53 (1.18)	1.28 (1.31)	0.78 (0.49)	0.51 (0.58)	1.03 (1.40)	0.87 (1.06)
3 (174)	3.92 (2.58)	2.20 (2.94)	1.53 (1.56)	0.83 (1.41)	0.57 (0.77)	0.03 (0.17)	0.84 (1.29)	0.68 (1.00)
4 (159)	4.27 (2.34)	2.44 (3.60)	1.68 (1.78)	0.11 (0.55)	0.06 (0.29)	0.03 (0.22)	0.73 (1.20)	0.63 (0.97)
5 (152)	3.70 (2.00)	1.99 (2.53)	1.50 (1.38)	1.08 (1.01)	0.73 (0.47)	0.40 (0.59)	0.51 (1.05)	0.44 (0.84)
6 (149)	4.26 (3.25)	1.87 (2.54)	1.46 (1.59)	1.03 (1.32)	0.64 (0.56)	0.40 (0.63)	0.58 (1.28)	0.52 (1.08)
7 (135)	3.96 (3.79)	2.29 (3.36)	1.73 (2.09)	0.05 (0.45)	0.02 (0.15)	0.06 (0.40)	0.76 (1.76)	0.58 (1.27)
8 (125)	3.54 (2.90)	2.99 (6.58)	1.98 (3.11)	0.82 (1.13)	0.58 (0.73)	0.50 (0.75)	0.94 (2.31)	0.76 (1.59)
9 (118)	3.95 (4.22)	2.97 (3.97)	2.19 (2.61)	0.23 (1.03)	0.15 (0.63)	0.34 (1.14)	0.95 (2.10)	0.80 (1.63)

^aFeedback messages viewed.

^bUnique per lesson, that is, the number of different messages or exercises that a participant used in a particular lesson.

^cMF: mindfulness exercise.