Table 4.
Mediation Analysis of the Direct and Indirect Effects of Sex, Intervention Engagement, and Principal Components 2 (Disease Risk) on Percent Weight Loss Following Intervention Session 4
| Effect | Estimate | SE | Z | p-value | 95% Lower CI | 95% Upper CI |
|---|---|---|---|---|---|---|
|
| ||||||
| Principal component 2 (disease risk) and sex | 0.699 | 0.202 | 3.457 | .001 | 0.300 | 1.098 |
| Self-monitoring dietary intake and sex | 0.014 | 0.084 | 0.166 | .868 | −0.151 | 0.177 |
| Self-monitoring dietary intake and principal component 2 | 0.055 | 0.027 | 2.011 | .044 | 0.000 | 0.108 |
| Percent weight loss and principal component 2 | 0.088 | 0.086 | 1.019 | .308 | −0.080 | 0.255 |
| Percent weight loss and self-monitoring dietary intake | 0.900 | 0.212 | 4.253 | < .001 | 0.478 | 1.309 |
| Percent weight loss and sex | −0.687 | 0.248 | −2.766 | .006 | −1.166 | −0.198 |
| Indirect path | 0.035 | 0.024 | 1.411 | .158 | 0.000 | 0.095 |
| Direct path | −0.687 | 0.248 | −2.766 | .006 | −1.166 | −0.198 |
| Total effect | −0.652 | 0.253 | −2.575 | .010 | −1.141 | −0.149 |
| Mediation through principal component 2 | 0.061 | 0.065 | 0.947 | .343 | −0.056 | 0.202 |
| Mediation through self-monitoring dietary intake | 0.013 | 0.078 | 0.161 | .872 | −0.146 | 0.167 |