Improved hearing in Swedish 70-year olds-a cohort comparison over more than four decades (1971-2014).

Age Ageing · 2018 · PMC5920334 · PMID 29415139

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a clear trendno p-value reported

To the best of our knowledge, this is the first study to show a clear trend of improved hearing in age-homogenous groups of old persons.

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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.