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. 2012 Dec 17;14(6):e168. doi: 10.2196/jmir.2218

Table 2.

Weight and BMI changes among returning participants.

	Level of engagement
	One-time visitors^a	Two-month participants^b	Three+ month participants^c
Number of participants	271	44	189
% of returning participants	54	9	38
Mean weight change, lbs (SD)	-0.06 (5.746) P=.868	-0.69 (3.982) P=.263	-1.77 (8.574) P=.006
Mean weight change, % (SD)	-0.04 (3.156) P=.853	-0.38 (2.306) P=.285	-0.97 (5.012) P=.009
Mean BMI change (SD)	-0.09 (1.892) P=.471	-0.01 (0.664) P=.900	-0.26 (1.511) P=.023

^a Completed only 1 follow-up survey.

^b Completed 1-2 follow-up surveys and stayed in the program for 2 months.

^c Completed at least 2 follow-up surveys and stayed in the program for at least 3 months.