The following files can be used as keys between coded drug dose combinations provided in SIR and CPRD output files.

Each description field lists active ingredient 1 (alphabetically ordered, not ordered in terms of dosage) followed by dosage in mg, then active ingredient 2 if 2 drugs prescribed simultaneously within the same drug family, followed by dosage of active ingredient 2, etc.

The following abbreviations are used in file names:

AA: Aldosterone Antagonists

ACEI: ACE inhibitors

ANT: Antimicrobials

ARB: Angiotensin receptor blockers

IMM: Immunosuppressants

LOOP: Loop diuretics

NEP: Other nephrotoxins

THI: Thiazide diuretics