Search the entire Understanding Patient Data site Search Reducing nationwide variation in stroke prevention and treatment Equal access to bowel cancer treatments in Yorkshire Improving treatment of teenage anxiety and depression Monitoring joint replacement surgery Supporting research into rare diseases Using registry data to search for treatments for rare diseases 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 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