Table 3.
The associations examined by linear regression analyses between baseline computer use (hh:mm/day), TV viewing (hh:mm/day), media presence in bedroom (yes/no) and sleep habits (hh:mm/day) eighteen-months later among Finnish school-aged children (n = 327–353)†
| |
Model 1 |
|
Model 2 |
|
|---|---|---|---|---|
| B-coefficient | 95% CI | B-coefficient | 95% CI | |
| |
Computer in bedroom |
|
|
|
| Sleep duration school days |
−0.15 |
−0.31-0.01 |
−0.11 |
−0.27-0.04 |
| Sleep duration weekends |
−0.01 |
−0.25-0.24 |
−0.04 |
−0.26-0.19 |
| Bedtime school day |
0.13 |
−0.01-0.27 |
0.09 |
−0.04-0.21 |
| Bedtime weekend |
0.25 |
0.05-0.45* |
0.16 |
−0.01-0.33 |
| Discrepancy of bedtime school days and at weekends |
0.15 |
−0.02-0.32 |
0.12 |
−0.03-0.27 |
| Discrepancy in sleep duration school and at weekends |
0.15 |
−0.11-0.40 |
0.07 |
−0.17-0.3 |
| |
Television in bedroom |
|
|
|
| Sleep duration school day |
−0.09 |
−0.26-0.07 |
−0.09 |
−0.24-0.07 |
| Sleep duration weekends |
−0.14 |
−0.10-0.39 |
0.11 |
−0.12-0.34 |
| Bedtime school day |
0.12 |
−0.02-0.26 |
0.10 |
−0.02-0.23 |
| Bedtime weekends |
0.18 |
−0.01-0.38 |
0.11 |
−0.06-0.27 |
| Discrepancy of bedtime school day and at weekends |
0.08 |
−0.08-0.24 |
−0.02 |
−0.13-0.16 |
| Discrepancy in sleep duration school day and at weekends |
0.24 |
−0.01-0.48 |
0.19 |
−0.04-0.42 |
| |
Computer use |
|
|
|
| Sleep duration school day |
−0.18 |
−0.26-(−)0.10*** |
−0.14 |
−0.22-(−)0.07*** |
| Sleep duration weekends |
−0.09 |
−0.21-0.032 |
−0.09 |
−0.20-0.02 |
| Bedtime school day |
0.19 |
0.13-0.26*** |
0.14 |
0.08-0.20*** |
| Bedtime weekends |
0.19 |
0.09-0.29*** |
0.12 |
0.04-0.20** |
| Discrepancy of bedtime school day and at weekends |
−0.004 |
−0.08-0.07 |
0.004 |
−0.07-0.07 |
| Discrepancy in sleep duration school day and at weekends |
0.10 |
−0.02-0.22 |
0.06 |
−0.05-0.17 |
| |
Television viewing |
|
|
|
| Sleep duration school day |
−0.09 |
−0.17-(−)0.01* |
−0.07 |
−0.14-0.01 |
| Sleep duration weekends |
−0.01 |
−0.13-0.11 |
−0.01 |
−0.12-0.11 |
| Bedtime school day |
0.10 |
0.04-0.17** |
0.07 |
0.01-0.13* |
| Bedtime weekends |
0.10 |
−0.001-0.20 |
0.04 |
−0.04-0.13 |
| Discrepancy of bedtime school day and at weekends |
−0.01 |
−0.09-0.07 |
−0.02 |
−0.09-0.05 |
| Discrepancy in sleep duration school day and at weekends | 0.09 | −0.03-0.21 | 0.08 | −0.04-0.19 |
† Range of respondents in the analyses.
CI confidence interval.
Model 1: Adjusted for gender, grade, nuclear family.
Model 2: Adjusted for gender, grade, nuclear family, and corresponding sleep variable 2006.
*<0.05, **<0.01, ***<0.001.
All independent variables are included separately in the models.