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Table 5 Mediated effect and asymmetric confidence intervals (αβ)

From: Exploring the mechanisms of weight loss in the SHED-IT intervention for overweight men: a mediation analysis

Variable

Intention-to-treat analysis

Per-protocol analysis

 

αβ

ProdLower

ProdUpper

95% CI

αβ

ProdLower

ProdUpper

95% CI

Physical activity

.07

-1.87

2.40

-.28 to .51

.01

-2.09

2.12

-.90 to .94

Portion size

.18

-1.60

2.47

-.24 to .84

.17

-1.70

2.48

-.37 to .96

Total energy

-.13

-2.47

1.69

-.73 to .27

-.06

-2.35

1.99

-.71 to .48

Alcohol

-.08

-2.33

1.94

-.68 to .41

-.03

-2.29

2.07

-.41 to .32

Total fat

-.46

-2.33

1.64

-1.51 to .28

-.51

-2.44

1.51

-1.87 to .33

  1. Abbreviations: αβ = product of coefficients estimate; ProdUpper and ProdLower represent the upper and lower critical values obtained from the PRODCLIN program; 95% CI = 95% asymmetric confidence intervals for the mediated effect obtained from the PRODCLIN program.
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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