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Table 2 Changes in weight and BMI

From: The evaluating self-management and educational support in severely obese patients awaiting multidisciplinary bariatric care (EVOLUTION) trial: principal results

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

  1. *Adjusted for baseline age, sex and baseline BMI using logistic or linear regression
  2. CI confidence interval, SD standard deviation, BMI body mass index