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Publication Citation: Urban trees and the risk of poor birth outcomes

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Author(s): Geoffrey Donovan; Yvonne Michael; David T. Butry; Amy Sullivan; John Chase;
Title: Urban trees and the risk of poor birth outcomes
Published: January 01, 2011
Abstract: This paper investigated whether greater tree-canopy cover is associated with reduced risk of poor birth outcomes in Portland, Oregon. Residential addresses were geocoded and linked to classified-aerial imagery to calculate percentage tree canopy in 50, 100, and 200m buffers around each home in our sample (n=5,696). Detailed data on maternal characteristics and additional neighborhood characteristics were obtained from birth certificates and tax records. We found that a 10% increase in tree-canopy cover within 50 m of a house reduced the number of small for gestational age births by 1.42 per 1,000 births (95% CI: 0.11-2.72). Results suggest the natural environment may affect pregnancy outcomes and should be evaluated in future research.
Citation: Health & Place
Pages: 4 pp.
Keywords: reproductive health; small for gestational age; preterm birth; urban trees
Research Areas: Microeconomic Analysis