Q J Med 2002; 95: 23-26
© 2002 Association of Physicians
Costs of aspirin and statins in general practice
From the Department of Medicine, Manchester Royal Infirmary, Manchester, UK
Received 7 August 2001 and in revised form 28 September 2001
Background: Aspirin and statins are the two drugs most commonly indicated for secondary prevention of atherosclerotic disease in the UK. Statin treatment, which is more expensive, is under-prescribed.
Aim: To assess the expenditure in Greater Manchester general practices on aspirin and statins.
Design: Survey of general practice records.
Methods: Practice registers were searched for patients receiving regular prescriptions for aspirin. For each patient, the next patient of the same sex, aged within ±5 years, not on aspirin, acted as a control. Details of all medications were recorded. In a sub-study, records of 100 patients on aspirin were studied to determine indications for aspirin prescription.
Results: There were 1003 (511 men, 492 women) in each group; mean age was 70 years in both groups. In the sub-study, 79% of patients received aspirin for established vascular disease, 9% for hypertension, 5% for diabetes mellitus, 5% for unknown reasons and 2% for arthritis. Of the patients on aspirin, 67% received dispersible aspirin 75 mg/day. The rest were on higher doses (10%) or on more expensive preparations (22%), costing up to 22.4 p/day. The mean daily cost of aspirin was 1.7p. Dyspepsia treatment was received by 266 patients and 194 controls (p<0.001). There was a wide range of dyspepsia medications (10–306p/day), averaging in the groups as a whole 15.5p/day in patients and 12.5p/day in controls. Of the patients on aspirin, 28% received statins, compared to 4% of controls. Mean daily expenditure on statins in patients was 23.4p.
Conclusion: Assuming the difference in the use of medication for dyspepsia between patients and controls was due to aspirin, the full cost of aspirin treatment was 4.7p/day. Statins were probably under-prescribed in aspirin-takers, many of whom would have been at high CHD risk.
Address correspondence to Professor P.N. Durrington, Department of Medicine, Manchester Royal Infirmary, Oxford Road, Manchester M13 9WL. e-mail: pdurrington{at}central.cmht.nwest.nhs.uk
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