Trial to Assess Implementation of New Research in a Primary Care Setting (TRAINS)

Exclusion Criteria

• •1. General practices that are not in England.
• •2. General practices that are not included in the CPRD.
• •3. Practices that cease to be part of the CPRD during the intervention time without contributing to the primary outcome.
• •4. Practices that merge during the intervention (where the merging practices were in different study arms).
• •1. School-aged children with asthma under 4 and over 16 years old as of 1st September 2021.
• •2. Children with no asthma diagnosis
• •3. Children with asthma who have not received a prescription for asthma medication. in the last 12 months