Monday, September 15, 2008

Infant health and pollution

Back from the European Trade Study Group conference in Warsaw, Poland. There was a couple of environmental sessions with some interesting papers.

We kick off again with a paper on infant health and pollution. They clearly have an excellent data set enabling the authors to get a good handle on the issue. Carbon monoxide is the main air pollutant that causes the damage. I need to read the paper to get a better understanding of the magnitude of the effects which are clearly crucial.

Air Pollution and Infant Health: Lessons from New Jersey

Date: 2008-07
By: Janet Currie
Matthew J. Neidell
Johannes Schmieder


We examine the impact of three "criteria" air pollutants on infant health in New Jersey in the 1990s by combining information about mother's residential location from birth certificates with information from air quality monitors. In addition to large sample size, our work offers three important innovations: First, because we know the exact addresses of mothers, we select those mothers closest to air monitors to ensure a more accurate measure of air quality. Second, since we follow mothers over time, we control for unobserved characteristics of mothers using maternal fixed effects. Third, we examine interactions of air pollution with smoking and other predictors of poor infant health outcomes. We find consistently negative effects of exposure to pollution, especially carbon monoxide, both during and after birth. The effects are considerably larger for smokers than for nonsmokers as well as for older mothers. Since automobiles are the main source of carbon monoxide emissions, our results have important implications for regulation of automobile emissions.
JEL: I12 Q53


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