Search the entire Understanding Patient Data site Search Extending the UK flu vaccination programme to children Equal access to bowel cancer treatments in Yorkshire Demonstrating the safety of an anti-obesity medication Using data to ensure the safety of medications Monitoring joint replacement surgery Comparing the uptake of emergency operations for heart attack across England Using data to plan services for people living with and beyond cancer 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 Investigating trends in diabetes across ethnic groups Understanding why diabetes rates vary between ethnic groups