“Direct” Approach Evaluates Air Quality Interventions, Zigler et al.

Causal Inference Methods for Estimating Long-Term Health Effects of Air Quality Regulations, was funded as part of HEI’s Accountability research program, aimed at understanding whether actions to improve air quality have resulted in improved health outcomes. Corwin Zigler and his colleagues used existing and newly developed statistical methods to assess whether an intervention was causally related to changes in pollutant levels or health outcomes, and applied their methods in two…