Can we prevent poststroke cognitive impairment? An umbrella review of risk factors and treatments.

BMJ Open · 2020 · PMC7482478 · PMID 32912953

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may not be significantno p-value reported

Between-study heterogeneity by I 2 metric was extracted, with values under 40% indicating that heterogeneity may not be significant.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.