Secular trends in the incidence of dementia in high-income countries: a protocol of a systematic review and a planned meta-analysis.

BMJ Open · 2017 · PMC5558865 · PMID 28389488

Europe PMC DOI

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a positive trendno p-value reported

However, increasingly, studies are emerging from high-income countries (HIC) that show a positive trend towards a possible decrease in dementia occurrence.

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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.