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  • Title: Lower prevalence than expected when screening 70-year-old men for abdominal aortic aneurysm.
    Author: Hager J, Länne T, Carlsson P, Lundgren F.
    Journal: Eur J Vasc Endovasc Surg; 2013 Oct; 46(4):453-9. PubMed ID: 23978561.
    Abstract:
    BACKGROUND: Screening 65-year-old men for abdominal aortic aneurysms (AAA) is a cost-effective method to reduce the mortality from ruptured AAA. However, contemporary results show a lower than expected prevalence of AAA, thus questioning the benefit of screening. Since the prevalence increases with age, a possible way to enhance the benefit of screening might be to screen older men. Our aim was to determine the contemporary screening-detected prevalence among 70-year-old men. METHODS: A total of 5,623 unscreened 70-year-old men were invited to ultrasound screening. Uni- and multivariable analyses were used to assess the risk factors for AAA. RESULTS: The attendance rate was 84.0%. The prevalence of previously unknown AAAs was 2.3%. When adding the 64 men with an already known AAA to the screening-detected ones, the total prevalence in the population was at least 3.0%, and the previously discovered AAAs constituted 37.4% of the total prevalence. "Ex smoker" and "Current smoker" were the most important risk factors. CONCLUSIONS: When screening 70-year-old men for AAA, the prevalence was less than half that expected, despite a high attendance rate. Smoking was the strongest risk factor. Almost 40% of the men with AAAs were already known from other means than screening.
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