Last updated February 27, 2019

Ozone and Short-term Mortality in 95 US Urban Communities, 1987-2000

  • 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