Increased traffic exposure and negative birth outcomes : a prospective cohort in Australia

Barnett, Adrian G., Plonka, Kathryn, Seow, W. Kim, Wilson, Lee-Ann M., & Hansen, Craig A. (2011) Increased traffic exposure and negative birth outcomes : a prospective cohort in Australia. Environmental Health, 10(1), p. 26.

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Background: Pregnant women exposed to traffic pollution have an increased risk of negative birth outcomes. We aimed to investigate the size of this risk using a prospective cohort of 970 mothers and newborns in Logan, Queensland. ----- ----- Methods: We examined two measures of traffic: distance to nearest road and number of roads around the home. To examine the effect of distance we used the number of roads around the home in radii from 50 to 500 metres. We examined three road types: freeways, highways and main roads.----- ----- Results: There were no associations with distance to road. A greater number of freeways and main roads around the home were associated with a shorter gestation time. There were no negative impacts on birth weight, birth length or head circumference after adjusting for gestation. The negative effects on gestation were largely due to main roads within 400 metres of the home. For every 10 extra main roads within 400 metres of the home, gestation time was reduced by 1.1% (95% CI: -1.7, -0.5; p-value = 0.001).----- ----- Conclusions: Our results add weight to the association between exposure to traffic and reduced gestation time. This effect may be due to the chemical toxins in traffic pollutants, or because of disturbed sleep due to traffic noise.

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12 citations in Web of Science®

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ID Code: 41484
Item Type: Journal Article
Refereed: Yes
Keywords: traffic, birth outcomes, pollution
DOI: 10.1186/1476-069X-10-26
ISSN: 1476-069X
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > PUBLIC HEALTH AND HEALTH SERVICES (111700) > Epidemiology (111706)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Public Health & Social Work
Copyright Owner: Copyright 2011 The Authors
Deposited On: 28 Apr 2011 22:11
Last Modified: 10 Aug 2011 17:21

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