|
Associations of computer and cell phone use with BMI at 17 y |
||||
| 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 |
|
Lajunen et al. BMC Public Health 2007 7:24 doi:10.1186/1471-2458-7-24 |
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