Search the entire Understanding Patient Data site Search Reducing nationwide variation in stroke prevention and treatment Equal access to bowel cancer treatments in Yorkshire 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 Comparing cancer survival rates worldwide Assessing a new treatment for severe asthma Identifying Covid-19 as a public health risk through data analysis Disproving the link between the MMR vaccine and autism Investigating trends in diabetes across ethnic groups