Key updates made to the COBRA model released in July 2013:

  1. Benefits of avoided adult mortality are now estimated using Krewski et al. (2009) and Lepeule et al. (2012). Laden et al. (2006) is no longer used in COBRA.
  2. There are changes in the set of health impact functions for two morbidity endpoints: asthma ER visits and all respiratory hospital admissions.
  3. Unit values for Asthma Exacerbation, Lower Respiratory Symptoms, and Asthma Exacerbation, Upper Respiratory Symptoms are now based on one symptom-day each.
  4. Recent mortality, hospital admissions, and emergency room visits incidence data has been added.

For more information about the updated model and all of its assumptions, see the User Manual.