Maternal exposure to low levels of ambient air pollution and preterm birth in Brisbane, Australia

Hansen, C., Neller, A., Williams, G. and Simpson, R. (2006) Maternal exposure to low levels of ambient air pollution and preterm birth in Brisbane, Australia. Bjog-an International Journal of Obstetrics And Gynaecology, 113 8: 935-941. doi:10.1111/j.1471-0528.2006.01010.x


Author Hansen, C.
Neller, A.
Williams, G.
Simpson, R.
Title Maternal exposure to low levels of ambient air pollution and preterm birth in Brisbane, Australia
Journal name Bjog-an International Journal of Obstetrics And Gynaecology   Check publisher's open access policy
ISSN 1470-0328
Publication date 2006-08
Sub-type Article (original research)
DOI 10.1111/j.1471-0528.2006.01010.x
Volume 113
Issue 8
Start page 935
End page 941
Total pages 7
Place of publication Oxford, England
Publisher Blackwell Publishing
Language eng
Subject 111402 Obstetrics and Gynaecology
Formatted abstract
Background
There is evidence that maternal exposure to ambient air pollution during pregnancy is associated with adverse birth outcomes.

Objective
To assess preterm birth (PTB) in relation to maternal exposure to ambient air pollution.

Design

Retrospective cohort.

Setting

Brisbane, Australia.

Sample

A total of 28 200 singleton live births for the period of 1 July 2000 to 30 June 2003.

Methods

Average maternal exposure estimates for ambient particulate matter (PM10 and bsp), ozone (O-3) and nitrogen dioxide were calculated over the first 3 months after last menstrual period (LMP) and the last 3 months prior to birth (individually and combined as trimesters).

Main outcome measures
PTB was defined as gestation < 37 weeks and odds ratios (OR) were calculated for PTB per interquartile range increase in the maternal exposure estimate for each pollutant. Various covariates were controlled for, including season of birth.

Results
Exposure to PM10 and O-3 during trimester one was associated with an increased risk of PTB (OR = 1.15, 95% CI 1.06-1.25 and OR = 1.26, 95% CI 1.10-1.45, respectively). The PM10 exposure effect associated with trimester one was strongly related to exposure during the first month post-LMP (PM10, month one; OR = 1.19, 95% CI 1.13-1.26).

Conclusion

These results suggest that maternal exposure to low levels of ambient air pollution is associated with PTB.
Keyword Obstetrics & Gynecology
Air Pollution
Pregnancy
Preterm Birth
Adverse Pregnancy Outcomes
Of-the-literature
Oxidative Stress
Southern California
Angeles-county
Time-series
Delivery
Weight
Taiwan
Health
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Public Health Publications
 
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Created: Fri, 25 Jan 2008, 16:54:25 EST