Cognitive Impairment and Risk of Stroke

News Wednesday, April 23rd, 2014

STROKEAHA.: March 27, 2014

Background and Purpose—Cognitive impairment is linked to vascular risk factors and brain vascular pathologies. Several studies have tested whether subjects with cognitive impairment have higher risk for stroke. The aim of this study was to systematically review available evidence on the association between cognitive impairment and risk of stroke to obtain precise effect estimates of the association and to identify which cognitive domains associate most with incident stroke.

Methods—PubMed, EMBASE, and Web of Science were searched from January 1, 1980, to October 1, 2013, without language restriction. Only prospective cohort studies were included. From each study, data on the association between cognitive impairment and stroke estimated with hazard ratios or relative risks with 95% confidence interval (CI) were extracted. For each study, risk of stroke per SD lower performance in various cognitive tests was calculated. Read More

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