Summary This indicator measures the percentage of registered patients recorded in QOF as having asthma. Annual LSOA-level estimates are provided for 2005-2024 in England. Technical description QOF achievement records with areaid_id values AST001, ASTHMA 1 were used to identify GP practice-year prevalence estimates for asthma. Practice-year records with non-positive denominators or computed prevalences above 30% were excluded. GP practice prevalences were linked to...