Table 5.
Associations between exposure to road traffic noise at home and school, and ADHD stratified by socioeconomic status in the TRAILS cohort
| Risk ratio for ADHD (95% confidence interval) | |||
|---|---|---|---|
| Low SES | High SES | ||
| Lden home (per 1 dBA) | ADHD symptoms |
n = 221 0.985 (0.952, 1.018) |
n = 120 1.007 (0.967, 1.049) |
| ADHD diagnosis |
n = 116 0.924 (0.872, 0.978)* |
n = 113 0.921 (0.871, 0.974)* |
|
| Lden school (per 1 dBA) | ADHD symptoms |
n = 188 0.992 (0.960, 1.025) |
n = 105 1.008 (0.970, 1.048) |
| ADHD diagnosis |
n = 113 0.985 (0.935, 1.037) |
n = 109 0.909 (0.859, 0.961)* |
|
| Lden home (per 1 dBA) | ADHD symptoms |
n = 188 0.981 (0.946, 1.017) |
n = 105 1.006 (0.962, 1.051) |
| Lden school (per 1 dBA) |
n = 188 0.992 (0.960, 1.023) |
n = 105 1.008 (0.970, 1.048) |
|
| Lden home (per 1 dBA) | ADHD diagnosis |
n = 113 0.924 (0.870, 0.981)* |
n = 109 0.907 (0.855, 0.963)* |
| Lden school (per 1 dBA) |
n = 113 0.985 (0.935, 1.038) |
n = 109 0.918 (0.855, 0.963)* |
|
Adjusted for age, parental SES, number of parents, ethnicity, perinatal circumstances and complications, and parental externalizing and internalizing problems. N in each cell refers to ADHD cases. Based on multinomial regression analysis with screen-negative for ADHD as reference group
*p < 0.05