Table 3.
Multivariate logistic regressions analysis of delayed sleep phase syndrome (DSPS) as a risk factor for register-based school non-attendance among boys and girls in the ung@hordaland study (n = 9,338)
| |
Days of non-attendance
$
|
Hours of non-attendance
$
|
||||||
|---|---|---|---|---|---|---|---|---|
| |
Girls |
Boys |
Girls |
Boys |
||||
| Adjustment variables | OR | 95% CI | OR | 95% CI | OR | 95% CI | OR | 95% CI |
| Crude (DSPS) |
3.15 |
2.22–4.70 |
4.57 |
2.93–7.14 |
2.37 |
1.60–3.53 |
4.90 |
3.23–7.45 |
| Age, paternal education, cohabitant status and family economy |
2.56 |
1.76–3.74 |
3.87 |
2.42–6.20 |
2.10 |
1.39–3.18 |
4.22 |
2.70–6.59 |
| Ever tried alcohol |
3.12 |
2.17–4.48 |
4.63 |
2.96–7.24 |
2.26 |
1.49–3.41 |
5.05 |
3.32–7.69 |
| Depression |
2.87 |
2.00–4.13 |
4.44 |
2.84–6.95 |
2.08 |
1.38–3.16 |
4.88 |
3.20–7.44 |
| Insomnia |
2.25 |
1.56–3.24 |
3.45 |
2.14–5.55 |
1.70 |
1.12–2.56 |
3.25 |
2.08–5.09 |
| Fully adjusted model* | 1.87 | 1.25–2.80 | 3.22 | 1.94–5.34 | 1.48 | 0.94–2.32 | 3.05 | 1.89–4.92 |
$ Dichotomized at the 90th percentile.
*Adjusted for age, paternal education, cohabitant status, family economy, alcohol, insomnia and depression.