Table 4 Prospective mediation analyses for the association between social environment variables (2004) and BMI (2006) using multi-level linear regression analysis
From: The neighborhood social environment and body mass index among youth: a mediation analysis
| Â | Â | BMI in 2006 | ||
|---|---|---|---|---|
| Â | Association between social environment variables and potential mediators (a)(95% CI) | Association between potential mediators and BMI(b)(95%CI) | Direct effect on BMI adjusting for mediators (c') (95%CI) | Mediated effect (a*b) (95%CI) |
Social network | Â | Â | Â | Â |
Screen-time (mins/day) | -9.88 (-20.57, 0.81) | 0.004 (0.000; 0.008) | -0.52 (-0.92; -0.11) | -0.040 (-0.097; 0.02) |
% sedentary time | 0.05 (-0.49; 0.59) | -0.027 (-0.11; 0.06) | -0.41 (-0.84; 0.02) | -0.001 (-0.02; 0.01) |
% MVPA time | 0.39 (0.09; 0.69) | -0.05 (-0.19; 0.10) | -0.39 (-0.82; 0.04) | -0.018 (-0.08; 0.04) |
Time spent outdoors (mins/day) | 13.54 (7.10, 19.99) | 0.003 (-0.003; 0.009) | -0.58 (-0.98; -0.18) | 0.041 (-0.04; 0.12) |
Number of walking/cycling trips (per week) | 1.23 (0.03,2.57) | 0.002 (-0.027, 0.031) | -0.52 (-0.92, -0.13) | 0.003 (-0.036, 0.041) |
Social trust & cohesion | Â | Â | Â | Â |
Screen-time (mins/day) | -4.75 (-18.66, 9.17) | 0.004 (0.000; 0.008) | -0.49 (-1.02; 0.04) | -0.019 (-0.08; 0.04) |
% sedentary time | 0.097 (-0.62; 0.82) | -0.03 (-0.11; 0.06) | -0.37 (-0.95; 0.22) | -0.003 (-0.03; 0.02) |
% MVPA time | 0.09 (-0.32; 0.49) | -0.07 (-0.22; 0.08) | -0.36 (-0.94; 0.22) | -0.006 (-0.04; 0.02) |
Time spent outdoors (mins/day) | 1.59 (-7.04, 10.22) | 0.001 (-0.005; 0.007) | -0.49 (-1.01; 0.03) | 0.002 (-0.01; 0.014) |
Number of walking/cycling trips (per week) | 0.27 (-1.38, 1.92) | 0.0 (-0.03, 0.03) | -0.52 (-1.03, -0.003) | 0.0 (-0.008, 0.008) |