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The purpose of this study is to examine the percentage of patients who present with abdominal aortic aneurysms (AAA) will also have intracranial aneurysms (IA) and conversely; to examine the percentage of patients who present with intracranial aneurysms will also have abdominal aortic aneurysms.
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The investigators have previously generated estimates for cost effectiveness of each arm of this reciprocal screening protocol based on literature dervied estimates of coprevalence and other key factors in a decision tree model to compare costs and outcomes. They measured expected outcomes using quality-adjusted life years (QALY) and the incremental cost-effectiveness ratios (ICER). The current study will involve establishment of the true co-prevalence and recalculation of the ICERs and QALYs. Based on their literature derived models we previously found an ICER of $34.01/QALY for AAA screening in IA patients and an ICER of $6,401.91/QALY for IA screening in AAA patients. Both of these are well below the societal accepted threshold of $60,000/QALY. However, both models were sensitive to co-prevalence. In the current study the investigators will therefore determine the actual cost-effectiveness of performing additional radiographic procedures and genetic counseling. The investigators will also bank DNA and RNA for future research.
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Note: Pregnancy is not a reason to exclude, but imaging done for the study will be postponed until after the subject has given birth.
360 participants in 2 patient groups
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Claire L McKinley, C.C.R.P.; Julia Krupa, M.S.
Data sourced from clinicaltrials.gov
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