UBD Research Referenced in WHO’s Updated HRAPIE-2 Report

The report provides updated scientific guidance to support health risk assessment and air quality policy across the WHO European Region.

Published On: 10/02/2026Categories: News

We were pleased to see that the methodology for two-pollutant concentration-response functions for PM2.5 and NO2 for quantification of mortality burden in health impact assessments described here has been applied by the World Health Organization’ in the Health risks of air pollution in Europe: HRAPIE-2 project – updated guidance on concentration–response functions for health risk assessment of air pollution in the WHO European Region. This report provides updated scientific guidance to support health risk assessment and air quality policy across the WHO European Region.

The cited work, developed within UBDPolicy led by researchers (Xuan Chen, Ulrike Gehring, and Gerard Hoek) from the Institute for Risk Assessment Sciences, Utrecht University, explores methodological approaches for estimating the health effects of multiple air pollutants. In particular, it applies a coefficient-difference method that can be used to adjust health impact estimates derived from single-pollutant models, enables the combined estimation of health impacts from two pollutants, and helps mitigate potential overestimation.

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