Tuesday, August 02, 2005

Ozone Mortality

The current issue of Epidemiology is loaded up by papers, maybe definitive papers, on Ozone and its association with mortality. BrooklynDodger commends the reader to finding the reader's own abstracts or full texts.

As with PM 2.5, variations in daily ozone are correlated with variation in daily mortality by sophisticated [black box] statistical methods. As with PM 2.5, there's a realtionship...and one of these studies at least controlled for PM 2.5.

The Dodger is pretty certain that ozone is highest on sunny, summer, weekday afternoons when people are more likely outside than on a winter's day [California, and Houston dreaming]. The Dodger has the feeling that PM 2.5 might be higher in winter?

A doubt-sower strategy is to compare the goodness of fit of various pollutants for mortality, and then argue whether it's PM or SO2 or Ozone, suggesting not settling on an exposure limit for any one.

The statistical findings, the p-values, or whatever they have these days, are likely an artifact of the range, high to low, of the pollutant.

On Health Effects of Ozone Exposure and Exposing the Epidemiologic Process.
The Editors

pg. 427-429
Ambient Ozone and Mortality.
Bates, David V.

pg. 430-435
The Methodologic Ozone Effect.
Goodman, Steven N.
pg. 436-445
A Meta-Analysis of Time-Series Studies of Ozone and Mortality With Comparison to the National Morbidity, Mortality, and Air Pollution Study.
Bell, Michelle L. *; Dominici, Francesca +; Samet, Jonathan M. ++
[Original Article]
pg. 446-457
Associations Between Ozone and Daily Mortality: Analysis and Meta-Analysis.
Ito, Kazuhiko; De Leon, Samantha F.; Lippmann, Morton
[Original Article]
pg. 458-468
Ozone Exposure and Mortality: An Empiric Bayes Metaregression Analysis.
Levy, Jonathan I.; Chemerynski, Susan M.; Sarnat, Jeremy A.
[Original Article]

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