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Stroke is a leading cause of death and long-term disability worldwide. Vitamin E (tocopherol) is an antioxidant which may protect against atherogenesis by acting as a scavenger of free radicals with subsequent reduced oxidation of low-density lipoprotein cholesterol and several other favourable effects on plaque stability, platelet aggregation and tendency to thrombosis.
However, a recent meta-analysis of 13 randomised controlled trials (166 282 participants) showed that, compared with placebo, vitamin E supplementation does not significantly prevent stroke of any type (RR 1.01; 95% CI 0.96 to 1.07).1 The statistical question addressed by this meta-analysis was whether or not vitamin E …
Footnotes
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Contributors FB and MS conceived the idea. FB performed analysis. RN and FT revised the manuscript for important intellectual content. All the authors approved the final version of the manuscript.
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Competing interests None.