The relationship between residential proximity to extremely low frequency power transmission lines and adverse birth outcomes
Date
2010
Authors
Auger, N.
Joseph, D.
Goneau, M.
Daniel, M.
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Journal article
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Journal of Epidemiology and Community Health, 2010; 65(1):83-85
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Abstract
Background: Occupational exposure to electromagnetic fields has been linked to adverse birth outcomes. This study evaluated whether maternal residential proximity to power transmission lines was associated with adverse birth outcomes.Methods: Live singleton births in the Montréal and Québec census metropolitan areas from 1990 to 2004 were extracted from the Québec birth file (N=707 215). Proximity was defined as residing within 400 m of a transmission line. Generalised estimating equations were used to evaluate associations between residential proximity to transmission lines and preterm birth (PTB), low birth weight (LBW), small-for-gestational age (SGA) birth and infant sex, accounting for maternal age, education, marital status, ethnicity, parity, period of birth, and neighbourhood median household income.Results: There was no association between residential proximity to transmission lines and PTB, LBW and infant sex in unadjusted and adjusted models. A lower likelihood of SGA birth was present for some distance categories (eg, adjusted OR 0.88, 95% CI 0.81 to 0.95 for 50–75 m relative to ≥400 m).Conclusion: Residential proximity to transmission lines is not associated with adverse births outcomes.
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Copyright 2011 BMJ Group