Outcome | In-person | Web-based | Controls | In-person minus controls (95% CI) | p value* | Web-based minus controls (95% CI) | p value* | In-person minus web-based (95% CI) | p value* |
---|---|---|---|---|---|---|---|---|---|
Baseline-observation-carried-forward analysis | |||||||||
 | n = 215 | n = 225 | n = 211 |  |  |  |  |  |  |
5% weight loss responders, % | 24.2 | 24.9 | 21.3 | 2.9 (-5.1 to 10.9) | 0.26 | 3.6 (-4.4 to 11.5) | 0.28 | -0.7 (-8.7 to 7.3) | 0.96 |
Absolute weight change, kg ± SD | -3.7 ± 7.1 | -2.8 ± 6.7 | -2.9 ± 8.8 | -0.8 (-2.3 to 0.8) | 0.16 | 0.2 (-1.3 to 1.6) | 0.96 | -0.9 (-2.2 to 0.4) | 0.11 |
Percent weight change, % ± SD | -2.7 ± 5.4 | -2.0 ± 4.8 | -1.9 ± 5.9 | -0.9 (-1.9 to 0.2) | 0.08 | -0.1 (-1.1 to 0.93) | 0.79 | -0.8 (-1.7 to 0.2) | 0.09 |
BMI change, kg/m2 ± SD | -1.3 ± 2.5 | -1.0 ± 2.4 | -1.0 ± 3.0 | -0.3 (-0.8 to 0.2) | 0.13 | 0 (-0.5 to 0.5) | 0.88 | -0.3 (-0.8 to 0.1) | 0.12 |
Completers analysis | |||||||||
 | n = 141 | n = 164 | n = 149 |  |  |  |  |  |  |
5% weight loss responders, % | 36.9 | 34.2 | 30.2 | 6.7 (-4.2 to 17.6) | 0.13 | 3.9 (-6.4 to 14.3) | 0.33 | 2.7 (-8.1 to 1.4) | 0.58 |
Absolute weight, kg ± SD | -5.6 ± 8.2 | -3.8 ± 7.6 | -4.2 ± 10.2 | -1.4 (-3.6 to 0.7) | 0.13 | 0.4 (-1.6 to 2.3) | 0.88 | -1.8 (-3.6 to -0.06) | 0.04 |
Percent weight change, % ± SD | -4.2 ± 6.2 | -2.7 ± 5.4 | -2.7 ± 6.8 | -1.5 (-3.0 to -0.01) | 0.046 | 0 (-1.4 to 1.4) | 0.86 | -1.5 (-2.8 to -0.2) | 0.02 |
BMI change, kg/m2 ± SD | -2.0 ± 2.8 | -1.4 ± 2.7 | -1.4 ± 3.5 | -0.6 (-1.3 to 0.1) | 0.08 | 0.1 (-0.6 to 0.7) | 0.92 | -0.6 (-1.3 to -0.01) | 0.04 |