1. Working Group on Effects, 29th Session, 22-24 September 2010 Task Force on Health: Results - common issues Michal Krzyzanowski TFH Chair WHO/Europe, European Centre for Environment and Health, Bonn http://www.euro.who.int/air ECE/EB.AIR/WG1/2010/11

2. Accessibility of health-relevant AQ data Several web-based systems displaying current AQ data (cities, countries, international) – very useful in case of evaluation of regional pollution episodes Different methods of data presentation; No harmonized information on health relevance of air pollution

3. Analyzing evidence on impacts of various air pollution management options on health  Contrast in exposure before / after intervention Limited contrast may make demonstration of the health benefits impossible due to limited power of health study. Consider evaluation of changes in emission / air quality / exposure first.  Studies of abrupt changes in emissions Focus on interventions related to well defined source category Consider possibility of “pooled” studies, based on the same intervention affecting various locations / populations Develop an inventory / clearinghouse of interventions Improve methodological approaches to the studies  Accountability assessment of long-term regulatory actions Conduct retrospective assessment of AQ regulations Plan in advance evaluation of future legislation (modeling; setting up long term study)

4. Review of health effects modeling Use GAINS to estimate population exposure under various scenarios; Continue effects assessment based on PM2.5 (annual mean) and O3 (SOMO35); Include cause-of-death assessment as sensitivity analysis ; Continue using ACS risk estimates; Consider the variability of exposure / impacts on a small geographical scale; Convene a dedicated workshop to review HIA approaches.