Abstract
A comparative analysis of the relationship between mortality and air pollution-weather was performed for three U. S. cities: New York, Philadelphia and Los Angeles. Analysis was performed in the same manner for each city for similar periods in time. Corrections were made for such factors as day-of-week and seasonal effects. Comparative analyses between cities and within cities (by season) permitted evaluation of reliability and validity of the findings. Using regression analysis, mortality was found to be related in time to air pollution and weather. A new method of analysis, the stimulus response method, was then utilized to show the relationship of environmental and health events as they are related in time.
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