Cropper, Simon, Alberini, and Sharma report the results of a time-series study of the impact of particulate air pollution on daily mortality in Delhi. They find:

• A positive, significant relationship between particulate pollution and daily nontraumatic deaths, as well as deaths from certain causes (respiratory and cardiovascular problems) and for certain age groups.
• In general, these impacts are smaller than those estimated for other countries, where on average a 100-microgram per cubic meter increase in total suspended particulates (TSP) leads to a 6-percent increase in nontraumatic mortality. In Delhi, such an increase in TSP is associated with a 2.3 percent increase in deaths.

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