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Dietary Potassium Intake and Risk of Stroke A Dose-Response Meta-Analysis of Prospective Studies
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- Larsson, Susanna C. (author)
- Karolinska Institutet
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- Orsini, Nicola (author)
- Karolinska Institutet
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- Wolk, Alicja (author)
- Karolinska Institutet
- (creator_code:org_t)
- LIPPINCOTT WILLIAMS & WILKINS, 2011
- 2011
- English.
- In: Stroke. - : LIPPINCOTT WILLIAMS & WILKINS. - 0039-2499 .- 1524-4628. ; 42:10, s. 2746-2750
- Journal article (peer-reviewed)
Abstract
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- Background and Purpose-Potassium intake has been inconsistently associated with risk of stroke. Our aim was to conduct a meta-analysis of prospective studies to assess the relation between potassium intake and stroke risk. Methods-Pertinent studies were identified by a search of PubMed from January 1966 through March 2011 and by reviewing the reference lists of retrieved articles. We included prospective studies that reported relative risks with 95% CIs of stroke for >= 3 categories of potassium intake or for potassium intake analyzed as a continuous variable. Study-specific results were pooled using a random-effects model. Results-Ten independent prospective studies, with a total of 8695 stroke cases and 268 276 participants, were included in the meta-analysis. We observed a statistically significant inverse association between potassium intake and risk of stroke. For every 1000-mg/day increase in potassium intake, the risk of stroke decreased by 11% (pooled relative risk, 0.89; 95% CI, 0.83 to 0.97). In the 5 studies that reported results for stroke subtypes, the pooled relative risks were 0.89 (95% CI, 0.81 to 0.97) for ischemic stroke, 0.95 (95% CI, 0.83 to 1.09) for intracerebral hemorrhage, and 1.08 (95% CI, 0.92 to 1.27) for subarachnoid hemorrhage. Conclusions-Dietary potassium intake is inversely associated with risk of stroke, in particular ischemic stroke. (Stroke. 2011; 42: 2746-2750.)
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Neurologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Neurology (hsv//eng)
Keyword
- diet
- epidemiology
- minerals
- population
- potassium
- prospective studies
- stroke
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- ref (subject category)
- art (subject category)
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- Uppsala University
- Karolinska Institutet
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