Table 2.

Indicators of use over 26 weeks, presented for three pre-specified groups of users based on their usage activity (N = 171). Of note, non-users are not included in this Table

	Logged in, but no further activity (n = 20)	Chose ≥1 goal, but did not complete goals (n = 38)	Completed ≥1 goal (n = 113)
Number of logins, median [IQR]	2.5 [1.5; 4.5]	4 [3; 11]	33 [16; 89]
Length of use, mean days median days [IQR]	26.1 4.5 [1; 29.5]	66.0 60.5 [6;102]	115.9 144 [63; 173]
SUS score at 3 month follow-up, mean (SD)	65.2 (17.7) (N = 7)	55.0 (15.1) (N = 14)	68.6 (16.5) (N = 72)
SUS score at 6 month follow-up, mean (SD)	51.3 (15.5) (N = 9)	52.0 (16.2) (N = 10)	69.2 (16.9) (N = 63)
Number of paragraphs read (range 0–108), median [IQR]	0 [0; 11.5]	5.5 [1; 21]	42 [18; 84]
Number of unique chosen goals, median [IQR]	N/A	2 [1; 3]	6 [3; 11]
Number of unique completed goals, median [IQR]	N/A	N/A	5 [3; 10]
Number of total completed goals median [IQR]	N/A	N/A	35 [11; 117]

Abbreviations: IQR interquartile range; SD Standard Deviation; n number; OA osteoarthritis