Table 2 Effect of the intervention on the potential mediators and the association between changes in mediators and changes in weight
From: Mediators of weight loss in the 'Healthy Dads, Healthy Kids' pilot study for overweight fathers
Hypothesized mediators | Direct effect of intervention on weight | Intervention effect on potential mediators | Association between potential mediators and weight | Mediated effect | |||||
|---|---|---|---|---|---|---|---|---|---|
C (SE)a | P value | A (SE)b | P value | B (SE)c | P value | AB (SE)d | 95% CIe | AB/(C+AB)f | |
Physical activity (steps/day) | −2.56 (1.22) | 0.0402 | 2769 (750) | 0.0006 | −0.0008 (0.0002) | 0.0002 | −2.31 (1.06) | −4.63 to 0.67 | 47% |
Childs activity (mean steps/day) | −4.63 (1.35) | 0.0012 | 1486 (521) | 0.0063 | −0.0002 (0.0003) | 0.6213 | −0.25 (0.54) | −1.31 to 0.81 | 5% |
Portion size (PSF) | −5.09 (1.28) | 0.0002 | −0.02 (0.10) | 0.8063 | 1.48 (1.88) | 0.4337 | −0.04 (0.21) | −0.51 to 0.45 | 1% |
Fruit (serves/day) | −5.25 (1.30) | 0.0002 | 0.28 (0.24) | 0.2550 | 0.44 (0.76) | 0.5689 | 0.12 (0.33) | −0.45 to 0.97 | 2% |
Vegetable (serves/day) | −5.13 (1.28) | 0.0002 | 0.00 (0.30) | 1.000 | 0.32 (0.61) | 0.5992 | 0.00 (0.22) | −0.58 to 0.33 | 0% |
Alcohol (% energy/day) | −4.96 (1.26) | 0.0003 | 2.16 (3.33) | 0.5207 | −0.08 (0.05) | 0.1452 | −0.17 (0.34) | −1.04 to 0.32 | 3% |
Fat (% energy/day) | −4.82 (1.33) | 0.0007 | −2.35 (1.13) | 0.0429 | 0.13 (0.16) | 0.4224 | −0.31 (0.40) | −1.24 to 0.34 | 6% |
Energy dense snacks (g/day) | −4.76 (1.30) | 0.0007 | −28.71 (17.13) | 0.1004 | 0.01 (0.01) | 0.2317 | −0.37 (0.33) | −1.00 to 0.30 | 7% |
Take away meals (g/day) | −4.93 (1.31) | 0.0005 | −24.87 (16.57) | 0.1400 | 0.008 (0.011) | 0.4711 | −0.20 (0.29) | −0.87 to 0.33 | 4% |
Total energy (kcal/day) | −4.76 (1.28) | 0.0006 | −1344 (953) | 0.1647 | 0.0003 (0.0002) | 0.1564 | −0.37 (0.38) | −1.33 to 0.19 | 7% |