Search the entire Understanding Patient Data site Search Improving management of chronic kidney disease Monitoring blood test results alerts GPs if a person’s health is deteriorating Improving treatment of teenage anxiety and depression Analysing trends in prescriptions to teenagers experiencing mental health problems 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 registry data to examine rates of emergency coronary intervention across England 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