Appendix 1.
List of Read Codes used in data extraction
| Variable | Read Code |
|---|---|
| Ischaemic heart disease | G3% |
| Diabetes | C10% |
| Hypertension | G2% |
| Stroke | G61, G610, G611, G612, G613, G614, G615, G616, G618, G61X0, G61z, G63y0%, G63y1%, G64%, G66%, G6760%, G6W%, G6X%, G65, G650 to G654, G656 to G65zz, F4236 |
| Heart failure | G58%, G1yz1, 662f to 662i |
| Systolic blood pressure | 2469 |
| Diastolic blood pressure | 246A |
| Total cholesterol | 44P |
| Body mass index | 22K |
| HbA1c level | 44TB, 42W%, 42c%, 44TC |
| Statin prescribed | 8B6A, 8252BRIDL (atorvastatin), 4285EGTON (fluvastatin), 5300EMIS (pravastatin), 6171EMIS (rosuvastatin), 235 (simvastatin), 771 (ezetimibe), 6080BRIDL (bezafibrate), 4946EMIS (ciprofibrate), 15070NEMIS (fenofibrate), 15250NEMIS (gemfibrozil) |
HbA1c = glycated haemoglobin.