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Road traffic noise and children's inattention
Kjell Vegard Weyde1,2,3, Norun Hjertager Krog4, Bente Oftedal4
1Department of Air Pollution and Noise, Norwegian Institute of Public Health, Oslo, Norway. Kjell.Vegard.Weyde@fhi.no.
Insights
Road traffic noise is linked to increased inattention symptoms in children. This study found no evidence that sleep duration mediates this negative impact on child development.
Area of Science:
- Environmental Health
- Pediatrics
- Neuroscience
Background:
- Children face increasing exposure to road traffic noise, posing risks to health and development.
- Childhood is a critical period for growth and brain maturation, making children particularly susceptible to environmental stressors like noise pollution.
Purpose of the Study:
- To investigate the association between residential road traffic noise exposure and reported inattention symptoms in children.
- To determine if sleep duration mediates the relationship between road traffic noise and childhood inattention.
Main Methods:
- Utilized data from the Norwegian Mother and Child Cohort Study.
- Linked parental reports of inattention at age 8 to modeled road traffic noise levels.
- Employed fractional logit response models to analyze noise exposure during pregnancy, averaged over 5 years, and at age 8.
Main Results:
- A significant association was found between road traffic noise exposure (at age 8 and averaged over 5 years) and increased inattention symptoms.
- Pregnancy noise exposure was associated with inattention in boys, but not girls.
- Sleep duration did not fulfill mediation criteria, indicating it does not explain the noise-inattention link.
Conclusions:
- Road traffic noise negatively impacts children's inattention symptoms.
- The findings highlight environmental noise as a potential risk factor for behavioral issues in children.
- Further research may explore other potential mediators or underlying mechanisms linking noise exposure to inattention.
Background:
An increasing number of children are exposed to road traffic noise levels that may lead to adverse effects on health and daily functioning. Childhood is a period of intense growth and brain maturation, and children may therefore be especially vulnerable to road traffic noise. The objective of the present study was to examine whether road traffic noise was associated with reported inattention symptoms in children, and whether this association was mediated by sleep duration.
Methods:
This study was based on the Norwegian Mother and Child Cohort Study conducted by the Norwegian Institute of Public Health. Parental reports of children's inattention at age 8 were linked to modelled levels of residential road traffic noise. We investigated the association between inattention and noise exposure during pregnancy (n = 1934), noise exposure averaged over 5 years (age 3 to 8 years; n = 1384) and noise exposure at age 8 years (n = 1384), using fractional logit response models. The participants were children from Oslo, Norway.
Results:
An association with inattention at age 8 years was found for road traffic noise exposure at age 8 years (coef = .0083, CI = [.0012, .0154]; 1.2% point increase in inattention score per 10 dB increase in noise level), road traffic noise exposure average for the last 5 years (coef = .0090, CI = [.0016, .0164]; 1.3% point increase/10 dB), and for pregnancy road traffic noise exposure for boys (coef = .0091, CI = [.0010, .0171]), but not girls (coef = -.0021, CI = [-.0094, .0053]). Criteria for doing mediation analyses were not fulfilled.
Conclusion:
Results indicate that road traffic noise has a negative impact on children's inattention. We found no mediation by sleep duration.
