Trouble sleeping inside: a cross-sectional study of the prevalence and associated risk factors of insomnia in adult prison populations in England.

Sleep Med · 2017 · PMC5390769 · PMID 28366324

Europe PMC DOI

hedged sentence

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closest p

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boldest claim

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borderline significantno p-value reported

Third, while the overall sample size was reasonable, lack of power in some sub-analyses may have explained some borderline significant results, incurring a potential risk of type-II statistical error.

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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.