Key result
Ultrasound screening for abdominal aortic aneurysm in 65-year-old men was not cost-effective, with an estimated cost of £43,485 per QALY gained.
Why the study?
Does ultrasound screening for abdominal aortic aneurysm improve cost effectiveness in men aged 65?
Does ultrasound screening for abdominal aortic aneurysm improve cost effectiveness in men aged 65?
Effect estimate: £43,485 per QALY gained
Ultrasound screening for abdominal aortic aneurysm in 65-year-old men does not appear to be cost-effective in the Danish healthcare system.
May not justify routine AAA ultrasound screening in 65-year-old men; leaves open whether updated models or alternative thresholds alter cost-effectiveness.
OBJECTIVE: To assess the cost effectiveness of screening men aged 65 for abdominal aortic aneurysm. DESIGN: Cost effectiveness analysis based on a probabilistic, enhanced economic decision analytical model from screening to death. POPULATION AND SETTING: Hypothetical population of men aged 65 invited (or not invited) for ultrasound screening in the Danish healthcare system. DATA SOURCES: Published results from randomised trials and observational epidemiological studies retrieved from electronic bibliographic databases, and supplementary data obtained from the Danish Vascular Registry. DATA SYNTHESIS: A hybrid decision tree and Markov model was developed to simulate the short term and long term effects of screening for abdominal aortic aneurysm compared with no systematic screening on clinical and cost effectiveness outcomes. Probabilistic sensitivity analyses using Monte Carlo simulation were carried out. Results were presented in a cost effectiveness acceptability curve, an expected value of perfect information curve, and a curve showing the expected (net) number of avoided deaths from abdominal aortic aneurysm over time after the introduction of screening. The model was validated by calibrating base case health outcomes and expected activity levels against evidence from the recent Cochrane review of screening for abdominal aortic aneurysm. RESULTS: The estimated costs per quality adjusted life year (QALY) gained discounted at 3% per year over a lifetime for costs and QALYs was pound43 485 (euro54,852; $71,160). At a willingness to pay threshold of pound30,000 the probability of screening for abdominal aortic aneurysm being cost effective was less than 30%. One way sensitivity analyses showed the incremental cost effectiveness ratio varying from pound32,640 to pound66,001 per QALY. CONCLUSION: Screening for abdominal aortic aneurysm does not seem to be cost effective. Further research is needed on long term quality of life outcomes and costs.
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Ehlers et al. (2009) studied abdominal aortic aneurysm. Ultrasound screening vs. No systematic screening was evaluated on Costs per quality adjusted life year (QALY) gained (£43,485 per QALY gained). Ultrasound screening for abdominal aortic aneurysm in 65-year-old men was not cost-effective, with an estimated cost of £43,485 per QALY gained.
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