A randomised controlled trial of the 5:2 diet.

PLoS One · 2021 · PMC8598045 · PMID 34788298

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of borderline significanceno p-value reported

The main limitation is that although the trial was larger than most previous studies of intermittent fasting, some findings of borderline significance could have become clearer if the sample size was larger.

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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.