QJM, Vol 90, Issue 4 277-282, Copyright © 1997 by Oxford University Press
BM Hendry, GC Viberti, S Hummel, A Bagust and J Piercy
Antihypertensive drugs slow the progressive decline in renal function seen
in patients with insulin-dependent diabetes and nephropathy. In a recent
study, the ACE inhibitor captopril protected against this deterioration in
renal function. We developed an economic model to analyse the cost impact
of ACE inhibitor treatment on progression to endstage renal failure (ESRF)
in diabetic patients over 4 years. Two scenarios were compared: one
describing the progression of a cohort of 1000 patients receiving 25 mg
captopril three times daily, and the other for an equivalent cohort without
such prophylactic treatment. Previously published data were used to
estimate the transition rates for each stage from the onset of renal
failure until death. All direct costs were discounted by an annual rate of
6%, and were subjected to sensitivity analysis. The discounted cost saving
of ACE inhibitor treatment for a cohort of 1000 patients was estimated as
0.95 million pounds over 4 years. Under sensitivity analysis, these results
were very robust to variations in the costs of ESRF treatment. Prophylactic
treatment with ACE inhibitors was predicted to provide substantial
increases in life expectancy and reduction in the incidence of ESRF, while
also providing significant economic savings.
ORIGINAL PAPERS
Modelling and costing the consequences of using an ACE inhibitor to slow the progression of renal failure in type I diabetic patients
Department of Medicine, King's College School of Medicine and Dentistry, London, UK.
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