- Finds that a 10-ppb (parts per billion) increase in the previous week’s ozone was associated with a 0.52% increase in daily mortality (95% posterior interval [PI], 0.27%-0.77%) and a 0.64% increase in cardiovascular and respiratory mortality (95% PI, 0.31%-0.98%)
- Finds that effect estimates for aggregate ozone during the previous week were larger than for models considering only a single day’s exposure
- Results were robust to adjustment for particulate matter, weather, seasonality, and long-term trends
- Results indicate a statistically significant association between short-term changes in ozone and mortality on average for 95 large US urban communities, which include about 40% of the total US population
- The findings indicate that this widespread pollutant adversely affects public health
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