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Shunted individuals were excluded. We examined 53 persons with hydrocephalic ventricular enlargement (probable iNPH: <jats:italic>n<\/jats:italic>\u00a0=\u00a024, asymptomatic or possible iNPH: <jats:italic>n<\/jats:italic>\u00a0=\u00a029). Comparisons were made with individuals without hydrocephalic ventricular enlargement.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The 5\u2010year mortality was 87.5% among those with probable iNPH. The hazard ratio (HR) for death was 3.8 (95% confidence interval [CI]: 2.5\u20136.0) for probable iNPH. Those with possible iNPH and asymptomatic hydrocephalic ventricular enlargement had increased risk of developing dementia, HR 2.8 (95% CI: 1.5\u20135.2). Only two individuals with hydrocephalic ventricular enlargement remained asymptomatic.<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion<\/jats:title><jats:p>In the present sample, persons with clinical and imaging signs of iNPH had excess mortality and an increased risk of dementia. The data also suggest that radiological signs of iNPH might be more important than previously supposed.<\/jats:p><\/jats:sec>","DOI":"10.1016\/j.jalz.2017.01.013","type":"journal-article","created":{"date-parts":[[2017,2,24]],"date-time":"2017-02-24T11:30:19Z","timestamp":1487935819000},"page":"850-857","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":75,"title":["Mortality and risk of dementia in normal\u2010pressure hydrocephalus: A\u00a0population study"],"prefix":"10.1002","volume":"13","author":[{"given":"Daniel","family":"Jaraj","sequence":"first","affiliation":[{"name":"Institute of Neuroscience and Physiology University of Gothenburg  Gothenburg Sweden"},{"name":"Neuropsychiatric Epidemiology Research Unit, Department of Psychiatry and Neurochemistry Institute of Neuroscience and Physiology, The Sahlgrenska Academy  M\u00f6lndal Sweden"},{"name":"Department of Clinical Neuroscience, Hydrocephalus Research Unit, 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