Search the entire Understanding Patient Data site Search Monitoring joint replacement surgery Analysing registry data to improve performance and safety Comparing cancer survival rates worldwide Using cancer registries to examine cancer survival variation between countries 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 Using data to conclusively disprove ideas that pose risks to public health Investigating trends in diabetes across ethnic groups Understanding why diabetes rates vary between ethnic groups