Web-Based Interventions Alone or Supplemented with Peer-Led Support or Professional Email Counseling for Weight Loss and Weight Maintenance in Women from Rural Communities: Results of a Clinical Trial

Table 7

Dosage of web-delivered content as assessed by women’s logins at time points when new intervention content was posted by intervention phase.

	Web-based; only (WO)		Web-based; discussion (WD)		Web-based; email (WE)
Dosage operationally defined when women logged into website during time points when new content was available, regardless of number of logins		%		%		%
Web-delivered content to all groups
Phase , 26 segments of new content posted over 26 weeks
100% dosage (26 segments)	16	18.4%	11	12.5%	12	13.0%
75–99% dosage (20–25 segments)	21	24.1%	32	36.4%	30	32.6%
50–74% dosage (13–19 segments)	23	26.4%	15	17.0%	22	23.9%
25–46% dosage (7–12 segments)	14	16.1%	16	18.2%	12	13.0%
1–25% dosage (1–6 segments)	13	14.9%	13	14.8%	15	16.3%
0% no dosage (0 segments)	0	0.0%	1	1.1%	1	1.1%
Total number of phase 1 completers	87		88		92
Phase , 26 segments of new content posted over 1 year
100% dosage (26 segments)	3	3.7%	0	0.0%	2	2.6%
75–99% dosage (20–25 segments)	13	16.0%	9	12.5%	15	19.5%
50–74% dosage (13–19 segments)	6	7.4%	8	11.1%	9	11.7%
25–46% dosage (7–12 segments)	14	17.3%	10	13.9%	8	10.4%
1–25% dosage (1–6 segments)	28	34.6%	28	38.9%	29	37.7%
0% no dosage (0 segments)	17	21.0%	17	23.6%	14	18.2%
Total number of phase 2 completers	81		72		77
Phase , 9 segments of new content posted over 1 year
>55.5%–100% dosage (6–9 segments)	16	21.1%	17	25.3%	15	20.5%
1–55.5% dosage (1–5 segments)	54	71.0%	40	59.7%	54	73.97%
0% no dosage (0 segments)	6	7.9%	10	14.9%	5	6.8%
Total number of phase 3 completers	76		67		73
Web-based discussion board primer content (WD)
Phase 1, 26 new discussion board primers posted over 26 weeks
100% dosage (26 primers)			8	9.1%
75–99% dosage (20–25 primers)			19	21.6%
50–74% dosage (13–19 primers)			13	14.8%
25–46% dosage (7–12 primers)			20	22.7%
1–25% dosage (1–6 primers)			23	26.1%
0% no dosage (0 primers)			5	5.7%
Phase 2, 18 new discussion board primers posted over 1 year
50–100% dosage (9–18 primers)			16	22.2%
1–49% dosage (1–8 primers)			34	47.2%
0% no dosage (0 primers)			22	30.5%
Phase 3, views and posts
One or more views			28	41.8%
Did not view board in phase 3			39	58.2%
One or more posts			10	14.9%
Did not post on board in phase 3			57	79.2%

was operationally defined as met when women logged on to website during time points when new content was made available, regardless of the number of logins during or between that time point. Note that women received an email prompt when new content was made available.
1 (baseline to 6 months) offered new content weekly for a total of 26 segments of new content.
2 (6 to 18 months) offered biweekly new content, named “hot topics” as reflected of current news stories, for a total of 26 segments of new content.
3 (18 to 30 months) offered new content in form of videos, success stories, and cartoons monthly for months 18 to 24 and bimonthly for months 24 to 30 for a total of 9 segments of new content.
discussion board peer-leader was responsible for posting new discussion topics called primers on the following schedule: phase 1 primers posted weekly for 26 total; phase 2 primers posted biweekly months 6 to 12 and monthly during months 12 to 18 for 18 total; and, phases 1 and 2 dosage reflected logins regardless of whether women posted or viewed posts. At phase 3, women received 3 initial primers yet had access to discussion board throughout the phase. Only the number of views and the number of posts are reported for WD during phase 3.