Table 3 Mediation effects of changes in psychosocial factors on changes in fat intake
Psychosocial factor | Single-mediator models | |||||
|---|---|---|---|---|---|---|
α(SE) | β(SE) | αβ(SE) | 95% CI of αβ | z | % mediated effect | |
Attitude | -0.004 (0.031) | -7.773 (2.077)*** | 0.031 (0.241) | -0.441, 0.503 | 0.129 | statistical suppressiona |
Self-efficacy | -0.020 (0.077) | -1.790 (1.581) | 0.036 (0.139) | -0.236, 0.308 | 0.258 | statistical suppressiona |
Social support | 0.005 (0.098) | -2.548 (1.732) | -0.013 (0.250) | -0.502, 0.477 | -0.051 | 0.1 |
Perceived benefits | 0.069 (0.039) | -1.799 (2.997) | -0.124 (0.113) | -0.345, 0.097 | -1.099 | 1.4 |
Perceived barriers | 0.067 (0.022)** | 2.260 (1.493) | 0.151 (0.060)* | 0.034, 0.268 | 2.535 | suppression |
Multiple-mediator model | ||||||
α(SE) | β(SE) | αβ(SE) | 95% CI of αβ | z | % mediated effect | |
Attitude | -0.004 (0.031) | -6.966 (1.866)*** | 0.028 (0.054) | -0.078, 0.134 | 0.515 | statistical suppressiona |
Self-efficacy | -0.020 (0.077) | -0.379 (1.941) | 0.008 (0.040) | -0.070, 0.085 | 0.191 | statistical suppressiona |
Social support | 0.005 (0.098) | -1.643 (2.177) | -0.008 (0.037) | -0.080, 0.060 | -0.223 | 0.1 |
Perceived benefits | 0.069 (0.039) | -0.144 (3.055) | -0.010 (0.211) | -0.423, 0.403 | -0.047 | 0.1 |
Perceived barriers | 0.067 (0.022)** | 0.786 (1.741) | 0.053 (0.117) | -0.177, 0.282 | 0.450 | statistical suppressiona |