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Table 2 Weight change from baseline at 3 and 6 months

From: Portion control for the treatment of obesity in the primary care setting

 

Usual Care

(N = 32)

Portion Control

(N = 33)

Difference in Means

(Plate-Control)

 
  

mean ± SD

 

mean ± SD

   
 

N

(min, max)

N

(min, max)

Estimate

(95% C.I.)

P-value*

3 months

       

   Change from baseline (kgs)

       

Complete case

24

-0.6 ± 2.2

(-6.4, +2.3)

23

-2.2 ± 3.6

(-11.6, +4.2)

-1.6

(-3.3, +0.1)

0.071

Last value carried forward

32

-0.4 ± 1.9

(-6.4, +2.3)

33

-1.5 ± 3.1

(-11.6, +4.2)

-1.1

(-2.4, +0.2)

0.099

   % change from baseline

       

Complete case

24

-0.5 ± 2.2

(-5.2, +2.3)

23

-2.4 ± 3.7

(-11.4, +3.9)

-1.8

(-3.6, +0.7)

0.041

Last observation carried forward

32

-0.4 ± 1.9

(-5.2, +2.3)

33

-1.7 ± 3.3

(-11.4, +3.9)

-1.3

(-2.6, +0.1)

0.062

6 months

       

   Change from baseline (kgs)

       

Complete case

23

-0.9 ± 4.2

(-15.7, +3.9)

19

-1.9 ± 3.7

(-10.0, +6.1)

-1.0

(-3.5, +1.5)

0.414

Last value carried forward

32

-0.5 ± 3.6

(-15.7, +3.9)

33

-1.0 ± 3.0

(-10.0, +6.1)

-0.5

(-2.2, +1.1)

0.528

   % change from baseline

       

Complete case

23

-0.7 ± 3.7

(-12.3, +3.7)

19

-2.1 ± 3.8

(-9.8, +5.6)

-1.4

(-3.7, +0.9)

0.232

Last observation carried forward

32

-0.4 ± 3.2

(-12.3, +3.7)

33

-1.2 ± 3.1

(-9.8, +5.6)

-0.8

(-2.3, +0.8)

0.311

  1. * Two-sample t-test