Mean BMI (SD) | Linear regression, adjusted for gender, physical exercise, and parents' education | |||
---|---|---|---|---|
Beta coefficient, 95% confidence interval | p-value | |||
Computer at home | No | 21.3 (2.9) | - | - |
Yes | ||||
without Internet | 21.6 (3.0) | 0.57 (0.15 to 0.98) | 0.007 | |
with Internet | 21.3 (3.1) | 0.23 (-0.09 to 0.56) | 0.16 | |
Weekly computer use for school, work, and recreation (hours) | 0–1 | 21.1 (3.0) | - | - |
>1–3 | 21.2 (2.9) | 0.10 (-0.21 to 0.41) | 0.52 | |
>3–6 | 21.3 (2.9) | 0.12 (-0.20 to 0.44) | 0.46 | |
>6–12 | 21.6 (3.0) | 0.31 (-0.0.38 to 0.65) | 0.081 | |
>12–115 | 21.7 (3.4) | 0.25 (-0.14 to 0.65) | 0.21 | |
Cell phone bill | (continuous) | - | 0.18 (0.06 to 0.30) | 0.003 |
Cell phone bill in a month (euros) | No cell phone | 21.0 (3.4) | -0.53 (-1.09 to 0.04) | 0.068 |
< 10 | 21.3 (3.6) | -0.20 (-0.60 to 0.21) | 0.34 | |
10 – 20 | 21.3 (2.9) | -0.25 (-0.49 to -0.006) | 0.045 | |
20 – 35 | 21.4 (2.9) | - | - | |
35 – 85 | 21.7 (2.9) | 0.29 (-0.04 to 0.63) | 0.085 |