Table 2.
Odds ratios (per 10 dB increase in noise) for associations between road traffic noise (Len) and sleep duration, with 95% confidence intervals.
| Analysis | Total | Girls | Boys |
|---|---|---|---|
| Crude a (n = 2665) | 1.08 (0.98, 1.19) | 1.19 (1.03, 1.37) | 0.99, (0.86, 1.14) |
| Min. adj. set b (n = 2665) | 1.07 (0.96, 1.18) | 1.17 (1.01, 1.36) | 0.98 (0.85, 1.13) |
| Full c (n = 2665) | 1.05 (0.94, 1.17) | 1.21 (1.04, 1.41) | 0.91 (0.78, 1.06) |
| Live with both parents (n = 2371) | 1.03 (0.92, 1.15) | 1.21 (1.03, 1.42) | 0.87 (0.74, 1.02) |
| Full with rail traffic noise d (n = 2665) | 1.04 (0.94, 1.16) | 1.18 (1.01, 1.38) | 0.93 (0.80, 1.08) |
a adjusted for age and gender in the total sample; adjusted for age in the stratified analyses. b additionally adjusted for income, season, and urbanity. c additionally adjusted for mother’s education, ethnicity, siblings in child’s household, and type of residential building. d Rail traffic noise added as a covariate in the full model, categorized as 0 dB, >0 to ≤30 dB, >30 dB.