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. Author manuscript; available in PMC: 2016 Feb 11.
Published in final edited form as: Obesity (Silver Spring). 2015 Oct;23(10):2009–2014. doi: 10.1002/oby.21211

Table 2.

Effects of a frequent self-weighing intervention with electronic graphic feedback on weight change over 1 year among young adults.*

Variable Control Group CTM Group Between group difference
p-value
n=781 n=812 t-test3
(Observed Data)		 Mixed model4
(Intent-to-Treat)
Treatment outcomes Pairwise comparisons Overall group*time interaction
Weight, kg
 Change at 6 months 0.64 ± 3.57 −0.19 ± 2.89 0.142 0.085
 Change at 1 year 1.08 ± 4.38 −0.47 ± 3.66 0.032 0.004 0.035
Body mass index, kg/m2
 Change at 6 months 0.22 ± 1.17 −0.06 ± 0.98 0.142 0.061
 Change at 1 year 0.35 ± 1.40 −0.15 ± 1.23 0.032 0.003 0.033
*

Values are observed values; means ± SD, for group outcomes. Significant differences between treatment outcomes were determined by t-test and repeated measures mixed model analysis.

1

Randomized n=82, of which 4 never initiated trial or provided data. At the 6 month and 1 year follow-ups, respectively, the number of participants was reduced to: n=68 and 68.

2

Randomized n=85, of which 3 never initiated trial or provided data, 1 excluded from analysis. At the 6 month and 1 year follow-ups, respectively, the number of participants was reduced to: n=67 and 61

3

Students t-test, including only participants who provided baseline, 6 month, and/or 12 month data (Observed Data), (Control n= 78, 68, 68, CTM n=81, 67, 61).

4

Covariates appearing in the adjusted model: baseline weight and BMI, and gender. All randomized participants initiating trial included in analysis (Intent-to-Treat), (n=78 and 81 in Control and CTM, respectively).

CTM denotes Caloric Titration Method.