Table 3.
The Effect of Treatment on the Mediators (a paths) and the Effect of the Mediators on 6 and 12 Month Outcomes (b paths)
|
a path coefficients (Treatment to Mediator) | ||
|---|---|---|
| Variable | Beta*(SE) | P-value |
| Behavioral Processes | ||
| Change in Mediator Baseline to 3m | .37(.05) | <.001 |
| Change in Mediator Baseline to 6m | .48(.07) | <.001 |
| Cognitive Processes | ||
| Change in Mediator Baseline to 3m | .24(.05) | <.001 |
| Change in Mediator Baseline to 6m | .38(.07) | <.001 |
| Self-Efficacy | ||
| Change in Mediator Baseline to 3m | .31(.07) | <.001 |
| Change in Mediator Baseline to 6m | .44(.09) | <.001 |
| Decisional Balance Index | ||
| Change in Mediator Baseline to 3m | .03(.01) | <.01 |
| Change in Mediator Baseline to 6m | .05(.01) | <.001 |
|
b path coefficients (Mediator to Outcome) | |||
|---|---|---|---|
| Variable | Beta*(SE) | P-value | |
| Behavioral Processes | |||
| 6 Month Outcomes | 74.56 (20.54) | <.01 | |
| 12 Month Outcomes | 72.28(24.17) | <.01 | |
| Cognitive Processes | |||
| 6 Month Outcomes | −17.57 (18.58) | 0.35 | |
| 12 Month Outcomes | −40.02(18.93) | 0.04 | |
| Self-Efficacy | |||
| 6 Month Outcomes | 18.53 (14.14) | 0.19 | |
| 12 Month Outcomes | 10.43(14.77) | 0.48 | |
| Decisional Balance Index | |||
| 6 Month Outcomes | 21.15 (70.81) | 0.77 | |
| 12 Month Outcomes | 31.20(80.03) | 0.70 | |
*
Betas are regression coefficients. Mediators for models of 6m outcomes are change scores from baseline to 3 months. Mediators for models of 12 month outcomes are change scores from baseline to 6 months. Physical activity is an absolute score. SE denotes standard error. Models are adjusted for baseline physical activity and baseline values of the mediators.