An evaluation of the health impacts of air pollution exposure on vulnerable populations involved spatial analysis and environmental health risk assessment. Consultations with air quality experts, epidemiologists, and public health officials informed the analysis of air quality measurements, satellite imagery, demographic data, and health records.
The decision behind the question
A public health client needed to know how air pollutant exposure affected vulnerable populations, and where the combined risk was highest geographically.
Data and methods used
Air quality measurements, satellite imagery, demographic data, and health records were combined for spatial analysis, with consultations from air quality experts, epidemiologists, and public health officials shaping the exposure definitions and the interpretation.
What the analysis found
- •Exposure and vulnerability overlapped in a limited number of areas, which concentrated the actionable risk.
- •Satellite-derived estimates filled gaps where monitor coverage was sparse, changing the risk map materially in those areas.
- •Health record associations were strongest for a specific subset of respiratory outcomes.
What changed as a result
Monitoring and intervention resources were directed to the overlap areas, and the sparse-coverage gaps identified in the analysis were prioritised for new monitors.
Related work is grouped under Evaluation, and the methods used here are described in more detail under analytical capabilities.
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