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Prevalence of asymptomatic carotid artery stenosis in the general population: an individual participant data meta-analysis.

TitlePrevalence of asymptomatic carotid artery stenosis in the general population: an individual participant data meta-analysis.
Publication TypeJournal Article
Year of Publication2010
Authorsde Weerd, M, Greving, JP, Hedblad, B, Lorenz, MW, Mathiesen, EB, O'Leary, DH, Rosvall, M, Sitzer, M, Buskens, E, Bots, ML
JournalStroke
Volume41
Issue6
Pagination1294-7
Date Published2010 Jun
ISSN1524-4628
KeywordsAdult, Age Factors, Aged, Aged, 80 and over, Carotid Stenosis, Female, Humans, Male, Mass Screening, Middle Aged, Prevalence, Severity of Illness Index, Sex Factors
Abstract<p><b>BACKGROUND AND PURPOSE: </b>In the discussion on the cost-effectiveness of screening, precise estimates of severe asymptomatic carotid stenosis are vital. Accordingly, we assessed the prevalence of moderate and severe asymptomatic carotid stenosis by age and sex using pooled cohort data.</p><p><b>METHODS: </b>We performed an individual participant data meta-analysis (23 706 participants) of 4 population-based studies (Malmö Diet and Cancer Study, Tromsø, Carotid Atherosclerosis Progression Study, and Cardiovascular Health Study). Outcomes of interest were asymptomatic moderate (> or =50%) and severe carotid stenosis (> or =70%).</p><p><b>RESULTS: </b>Prevalence of moderate asymptomatic carotid stenosis ranged from 0.2% (95% CI, 0.0% to 0.4%) in men aged <50 years to 7.5% (5.2% to 10.5%) in men aged > or =80 years. For women, this prevalence increased from 0% (0% to 0.2%) to 5.0% (3.1% to 7.5%). Prevalence of severe asymptomatic carotid stenosis ranged from 0.1% (0.0% to 0.3%) in men aged <50 years to 3.1% (1.7% to 5.3%) in men aged > or =80. For women, this prevalence increased from 0% (0.0% to 0.2%) to 0.9% (0.3% to 2.4%).</p><p><b>CONCLUSIONS: </b>The prevalence of severe asymptomatic carotid stenosis in the general population ranges from 0% to 3.1%, which is useful information in the discussion on the cost-effectiveness of screening.</p>
DOI10.1161/STROKEAHA.110.581058
Alternate JournalStroke
PubMed ID20431077
PubMed Central IDPMC4254855
Grant ListU01 HL080295 / HL / NHLBI NIH HHS / United States
HHSN268200800007C / HL / NHLBI NIH HHS / United States
N01HC55222 / HL / NHLBI NIH HHS / United States
N01HC85086 / HL / NHLBI NIH HHS / United States
N01HC85082 / HL / NHLBI NIH HHS / United States
N01HC85083 / HL / NHLBI NIH HHS / United States
N01HC85079 / HL / NHLBI NIH HHS / United States
R01 AG023629 / AG / NIA NIH HHS / United States
N01HC85080 / HL / NHLBI NIH HHS / United States
N01HC85081 / HL / NHLBI NIH HHS / United States