Table 3 Cross-sectional mediation analyses for the association between social environment variables (2004) and BMI (2004) using multi-level linear regression analysis
From: The neighborhood social environment and body mass index among youth: a mediation analysis
| Â | Â | BMI in 2004 | ||
|---|---|---|---|---|
| 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) | -13.65 (-23.61, -3.68) | 0.005 (0.001, 0.009) | -0.70 (-1.06, -0.34) | -0.07 (-0.14, 0.005) |
% sedentary time | -0.098 (-0.59; 0.40) | 0.001 (-0.07; 0.07) | -0.59 (-0.97; -0.20) | 0.00 (-0.007; 0.007) |
% MVPA time | 0.38 (0.10; 0.66) | -0.074 (-0.21; 0.06) | -0.56 (-0.95; -0.17) | -0.03 (-0.08; 0.03) |
Time spent outdoors (mins/day) | 13.88 (7.89, 19.87) | 0.002 (-0.004, 0.008) | -0.73 (-1.08, -0.37) | 0.03 (-0.055, 0.11) |
Number of walking/cycling trips (per week) | 1.04 (-0.69, 2.76) | 0.007 (-0.01, 0.03) | -0.71 (-1.06, -0.36) | 0.007 (-0.015, 0.029) |
Social trust & cohesion | Â | Â | Â | Â |
Screen-time (mins/day) | -10.76 (-23.60, 2.09) | 0.005 (0.001, 0.009) | -0.58 (-1.04, -0.11) | -0.054 (-0.13, 0.02) |
% sedentary time | 0.30 (-0.35; 0.95) | 0.003 (-0.07; 0.08) | -0.45 (-0.96; 0.06) | 0.001 (-0.02; 0.02) |
% MVPA time | -0.055 (-0.42; 0.31) | -0.098 (-0.23; 0.04) | -0.44 (-0.97; 0.06) | 0.005 (-0.03; 0.04) |
Time spent outdoors (mins/day) | -1.66 (-9.68, 6.36) | -0.000 (-0.006, 0.006) | -0.48 (-0.95, -0.02) | 0.000 (-0.01, 0.01) |
Number of walking/cycling trips (per week) | 0.27 (-1.83, 2.37) | 0.007 (-0.01, 0.03) | -0.59 (-1.04, -0.13) | 0002 (-0.01, 0.02) |