Table 2 Participant engagement, dose delivered, frequency, timing and difficulties experienced of TXT2BFiT program components by intervention groups

 Completed, % (n)

91.8 (574/625)

81.3 (187/230)

100 (125/125)^b

n/a

 Delivered, % (n)

97.8 (11543/11808)

95.7 (660/690)

97.0 (485/500)

n/a

 Replying to ≥ 50 %, % (n)

52.8 (66/123)^c

40.0 (46/115)^d

91.2 (114/125)^e

n/a

 Replying to all, % (n)

20.3 (25/123)

6.1 (7/115)

62.4 (78/125)

n/a

Frequency (sent often enough) % (n)

95.5 (105/110)

75.0 (72/96)

n/a

n/a

Timing (suitable), % (n)

93.6 (103/110)

n/a

n/a

n/a

Difficulties, % (n)

8.2 (9/110)

4.2 (4/96)

1.9 (2/104)

n/a

 Delivered, % (n)

100 (1476/1476)

100 (690/690)

n/a

n/a

Frequency (sent often enough), % (n)

92.7 (102/110)

71.9 (69/96)

n/a

n/a

Timing (suitable), % (n)

96.4 (106/110)

n/a

n/a

n/a

Difficulties, % (n)

3.6 (4/110)

3.1 (3/96)

n/a

n/a

  ePASS

52.0 (64/123)

n/a

n/a

  eSIYP

30.9 (38/123)

n/a

n/a

  eVIP

43.1 (53/123)

n/a

n/a

  ePASS^g

327 (3, 1–39)

n/a

n/a

  eSIYP^h

128 (2, 1–28)

n/a

n/a

  eVIPⁱ

219 (2, 1–39)

n/a

n/a

Difficulties

28.2 (31/110)

19.8 (19/96)

n/a

n/a

 Community blog posts by staff, n

10

n/a

n/a

 Community blog posts by participants, n

8

n/a

n/a

Difficulties, % (n)

7.3 (8/110)

3.1 (3/96)

2.9 (3/104)

n/a