No phenotypic or genotypic evidence for a link between sleep duration and brain atrophy.

Nat Hum Behav · 2023 · PMC10663160 · PMID 37798367

Europe PMC DOI

hedged sentences

0.1200

closest p · 2.4× alpha

0.1200

boldest claim

The sentences

showed a trendP = 0.12not close (p > 0.1)

TGV showed a trend-level effect for the shorter-than-average sleepers ( P = 0.12).

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nominally significantno p-value reported

This effect was removed from the estimated sleep duration–brain volume relationships by covarying for ICV, which may contribute to explaining why the nominally significant relationship between TGV and sleep duration in the MR analysis did not survive corrections.

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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.