Search the entire Understanding Patient Data site Search Demonstrating the safety of an anti-obesity medication Using data to ensure the safety of medications Comparing the uptake of emergency operations for heart attack across England Assessing a new treatment for severe asthma The impact of air pollution on health Using pan-European data to understand how air pollution affects health Disproving the link between the MMR vaccine and autism Investigating trends in diabetes across ethnic groups Understanding why diabetes rates vary between ethnic groups Improving treatments for COPD Real-time monitoring of a new treatment for COPD in Salford