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) | Â | Â | 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) | Â | Â | 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)* | Â | Â | Â | Â |
• 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) | Â | Â | NA | NA |
• attitude |  | 0.1 | -0.3* |  |  |
• subjective norm |  | 0.7* | -0.0 |  |  |
• perceived control |  | 0.2 | -0.3* |  |  |
• habit |  | -0.1 | 0.2* |  |  |