Anaemia Aurum codelist (as part of Clegg eFrailty Index codelists): 

Generated by GGL and reviewed by CWG
Used CPRD AURUM Medical Browser, Version March 2024


Notes on process: 
- Start with aplastic anaemia codelist from JD & CWG -  https://datacompass.lshtm.ac.uk/id/eprint/2794/
- searched on term for medcodeids that no longer matched records in the Code Browser 
- merged in Julian Matthewman Aurum "translation" of Clegg codelist
- used terms in Clegg codelist to search on "term" and identify additional codes 

Notes on inclusion/exclusion criteria: 
- included historic ("history of") codes as trying to capture frailty as a state rather than incidence of components
- included codes indicating taking anaemia drugs e.g. "adverse reaction to drugs used in iron deficiency anaemia"
- excluded "family hisotry" codes
- excluded screening codes which dont clearly indicate result of screening 
- excluded codes indicating someone was a "carrier" e.g. "carrier of beta thalassaemia"  or  "alpha thalassaemia trait"