Table 4.

Engagement with features of NHS-DDPP across the nine-month intervention (median, IQR, range).

	n	Engagement perioda
		1	2	3	4	5	6	7	8	9
		Median (IQR) [Range]
Self-monitoringb
Number of times behaviours were self-monitored	1826	35 (87) [0–3214]	28 (87) [0–1483]	10 (72) [0–680]	1 (55) [0–659]	0 (36) [0–68]	0 (29) [0–667]	0 (16) [0–661]	0 (8) [0–648]	0 (1) [0–662]
Number of times outcomes were self-monitored	1826	2 (6) [0–85]	1 (5) [0–147]	1 (4) [0–116]	0 (3) [0–98]	0 (0) [0–138]	0 (0) [0−102]	0 (0) [0–64]	0 (0) [0–241]	0 (0) [0−113]
Goal settingb
Number of times a behavioural and/or outcome goal was set or amended	1826	4 (18) [0–319]	0 (12) [0−300]	0 (7) [0–300]	0 (3) [0–300]	0 (1) [0–300]	0 (0) [0–300]	0 (0) [0–300]	0 (0) [0–256]	0 (0) [0–261]
Number of times a behavioural goal was set	886	2 (4) [0–27]	0 (1) [0−12]	0 (0) [0−13]	0 (0) [0–8]	0 (0) [0–8]	0 (0) [0–7]	0 (0) [0–5]	0 (0) [0−10]	0 (0) [0–5]
Number of times an outcome goal was set	886	0 (1) [0–10]	0 (0) [0–4]	0 (0) [0–3]	0 (0) [0–4]	0 (0) [0–4]	0 (0) [0–2]	0 (0) [0–9]	0 (0) [0–4]	0 (0) [0–2]
Educational content
Number of times articles were accessed	1543	12 (48) [0–846]	5 (36) [0–636]	2 (18) [0–400]	0 (8) [0–335]	0 (1) [0–385]	0 (3) [0–316]	0 (4) [0−201]	0 (4) [0–197]	0 (4) [0–249]
Number of times unique articles were accessed	1543	6 (23) [0–119]	4 (23) [0–125]	2 (14) [0−123]	0 (4) [0–150]	0 (0) [0–90]	0 (2) [0–143]	0 (4) [0–89]	0 (4) [0–197]	0 (3) [0–214]
Number of times educational content was sent by health coach	283	8 (5) [0−20]	6 (4) [0–13]	6 (5) [0–17]	4 (4) [0–10]	4 (5) [0–12]	2 (4) [0–14]	1 (2) [0–17]	1 (2) [0–10]	0 (2) [0–18]
Health coach support
Number of calls with health coach	1223	1 (1) [0–3]	0 (0) [0–4]	0 (0) [0–2]	0 (1) [0–2]	0 (1) [0–2]	0 (1) [0–3]	0 (0) [0–2]	0 (0) [0–2]	0 (0) [0–2]
Number of messages health coach has responded to	1543	1 (7) [0–185]	1 (9) [0−323]	0 (3) [0–339]	0 (1) [859]	0 (0) [0–802]	0 (0) [0–280]	0 (0) [0−302]	0 (0) [0–518]	0 (0) [0–513]
Number of messages sent from health coach	283	5 (1) [0−11]	4 (1) [0–9]	4 (2) [0–14]	2 (3) [0–10]	2 (1) [0–6]	2 (3) [0–7]	1 (2) [0–5]	1 (1) [0–4]	0 (1) [0–4]
Number of messages sent from service user	283	4 (6) [0–191]	2 (4) [0–135]	2 (5) [0–102]	1 (3) [0–146]	1 (2) [0−131]	0 (2) [0–46]	0 (1) [0–35]	0 (1) [0−30]	0 (1) [0–30]
Group support
Number of peer messages sent in group chat by service user	603	2 (11) [0–152]	1 (9) [0–246]	0 (5) [0–285]	0 (2) [0–470]	0 (0) [0–259]	0 (0) [0–68]	0 (0) [0–40]	0 (0) [0−22]	0 (0) [0−31]
Number of group posts in discussion forum by service user	886	0 (0) [0–12]	0 (0) [0–2]	0 (0) [0–1]	0 (0) [0–6]	0 (0) [0–10]	0 (0) [0–13]	0 (0) [0–4]	0 (0) [0–6]	0 (0) [0–9]
Number of comments on group posts in discussion forum by service user by service user	886	0 (0) [0–13]	0 (0) [0–30]	0 (0) [0–75]	0 (0) [0−220]	0 (0) [0–189]	0 (0) [0–58]	0 (0) [0–175]	0 (0) [0–278]	0 (0) [0–274]
Number of likes on group posts in discussion forum by service user	886	0 (0) [0–48]	0 (0) [0–49]	0 (0) [0–177]	0 (0) [0–64]	0 (0) [0–79]	0 (0) [0–107]	0 (0) [0–98]	0 (0) [0–173]	0 (0) [0–196]

Note. The numbers in curved brackets denote the inter-quartile range (IQR). The numbers in squared brackets denote the range.

Note. n(provider A) = 940; n(provider C) = 283; n(provider D) = 603.

^aEngagement period denotes 30 day periods: engagement period 1 = days 1 to 30; engagement period 2 = days 31 to 60, etc.

^bIf users self-monitored more than one individual behaviour/outcome during one occasion, or set a goal for more than one individual behaviour/outcome during one occasion, this was reported as individual instances of self-monitoring or goal setting.