Table 5.
Intervention effects on energy balance related behaviours, mediators, mediator effects, 95% confidence intervals and percent mediation among boys
|
intervention effect on outcome (τ) (95% CI) |
intervention effect on mediator (α) |
mediator effect on outcome (β) |
mediated effect (α*β) (95%CI) |
% mediation |
|
|
screen viewing behaviour (min/day) |
-13.4 (-39.9 ;13.5) | NA | NA | ||
| • attitude | 0.1 | -13.0 | |||
| • subjective norm | -0.1 | 5.2 | |||
| • perceived control | -0.1 | -17.2* | |||
| • habit | -0.4 | 40.1* | |||
|
active transport to school (min/wk) |
1.1 (-5.4 ;7.5) | NA | NA | ||
| • attitude | 0.56 | -2.0* | |||
| • perceived environment | 0.15 | 0.0 | |||
| • subjective norm | 0.78* | -0.1 | |||
| • perceived control | 0.26 | 0.37 | |||
| • habit | 0.1 | 0.4 | |||
|
sugar-containing beverage consumption (ml/day) |
-303.5 (-502.4;-104.5)* | ||||
| • attitude | 0.6* | -152.3* | -89.4 (-176.4;-2.4)* | 4.5 | |
| • subjective norm | 0.5 | -35.4 | -15.8 (-63.8;32.2) | suppression | |
| • perceived control | 0.3 | -122.7* | -30.3 (-133.5;72.9) | suppression | |
| • habit | -0.6* | 155.8* | -92.7 (-184.8;-0.6)* | 3.8 | |
|
high caloric snack consumption (portion/day) |
-0.0 (-0.3;0.3) | NA | NA | ||
| • attitude | 0.1 | -0.3* | |||
| • subjective norm | 0.7* | -0.0 | |||
| • perceived control | 0.2 | -0.3* | |||
| • habit | -0.1 | 0.2* |
* (p < 0.05).
NA = not applicable