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MCI was further categorized by imaging into MCI caused by prodromal Alzheimer's disease (MCI\u2010A), MCI resulting from cerebrovascular disease (MCI\u2010CVD), MCI with vascular risk factors (MCI\u2010VRF), and MCI caused by other diseases (MCI\u2010O).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The prevalences of overall MCI, MCI\u2010A, MCI\u2010CVD, MCI\u2010VRF, and MCI\u2010O were 20.8%\u00a0(95% confidence interval [CI]\u00a0=\u00a020.0\u201321.6%), 6.1% (95% CI\u00a0=\u00a05.7\u20136.6%), 3.8% (95%\u00a0CI\u00a0=\u00a03.4\u20134.2%), 4.9% (95% CI\u00a0=\u00a04.5\u20135.4%), and 5.9% (95% CI\u00a0=\u00a05.5\u20136.4%) respectively. The rural population had a higher prevalence of overall MCI (23.4% vs 16.8%, <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a0.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The prevalence of MCI in elderly Chinese is higher in rural than in urban areas. Vascular\u2010related MCI (MCI\u2010CVD and MCI\u2010VRF) was most common.<\/jats:p><\/jats:sec>","DOI":"10.1016\/j.jalz.2013.09.008","type":"journal-article","created":{"date-parts":[[2014,1,10]],"date-time":"2014-01-10T17:03:22Z","timestamp":1389373402000},"page":"439-447","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":175,"title":["The prevalence of mild cognitive impairment and its etiological subtypes\u00a0in elderly Chinese"],"prefix":"10.1002","volume":"10","author":[{"given":"Jianping","family":"Jia","sequence":"first","affiliation":[{"name":"Department of Neurology, Xuan Wu Hospital Capital Medical University Beijing People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aihong","family":"Zhou","sequence":"additional","affiliation":[{"name":"Department of Neurology, Xuan Wu Hospital Capital Medical University Beijing People's Republic of 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