Table 2.
Mediation table for intervention effects
| Model: dependent variable | Treatment on dependent variable β coefficient (p value) |
Hypothesised mediators | Treatment on mediator β coefficient (p value) |
M1 on M2 and M3 β coefficient (p value) [95% CI] |
M2 on M3 β coefficient (p value) [95% CI] |
Treatment > M1 > dependent variable Effect [95% CI] |
Treatment > M2 > dependent variable Effect [95% CI] |
Treatment > M3 > dependent variable Effect [95% CI] |
Treatment > M1 > M2 > dependent variable Effect [95% CI] |
Treatment > M1 > M3 > dependent variable Effect [95% CI] |
Treatment > M2 > M3 > dependent variable Effect [95% CI] |
Treatment > M1 > M2 > M3 > dependent variable Effect [95% CI] |
Total sum of all the indirect effects Effect [95% CI |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. Physical activity | .45 (.00***) | Autonomy-support (M1) | .17 (.04*) | n/a | n/a | .06 [.012 to .163]* | .01 [− .015 to .087] | .04 [.000 to .134] | .01 [− .002 to .059] | − .00 [− .036 to .011] | .00 [− .004 to .037] | .004 [.000 to .023]* | .14 [.047 to .267]* |
| Needs satisfaction (M2) | .15 (.08) | .42 (.05) [− .004 to .846] |
n/a | ||||||||||
| Intrinsic motivation (M3) | .02 (.80) | − .01 (.70) [− .118 to .084] |
.04, (.12) [− .012 to .105] |
||||||||||
| 2. Well-being | .07 (.42) | Autonomy-support (M1) | .17. (04*) | n/a | n/a | .03 [.004 to .104]* | .03 [− .015 to .099] | − .00 [− .038 to .011] | .01 [.003 to .054]* | .00 [− .002 to .009] | .00 [− .005 to .019] | .00 [− .002 to .007] | .09 [.010 to .194 ]* |
| Needs satisfaction (M2) | .15 (.08) | .43 (.00***) [.186 to .685] | n/a | ||||||||||
| Intrinsic motivation (M3) | .02 (80) | .03 (.29) [− .035 to .113] | .11 (.00***) [.066 to .165] |
Note: Control and intervention groups were coded as 0 and 1, respectively
CI lower and upper confidence intervals, n/a non-applicable, italic type confidence intervals indicate a significance at p < .05 because the CIs do not include zero
*p < .05, **p < .01, ***p < .001