Comparison of isoflurane and propofol sedation in critically ill COVID-19 patients-a retrospective chart review.

J Anesth · 2021 · PMC8225486 · PMID 34169362

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highly significantno p-value reported

However, most differences were highly significant with p values well below 0.01, making bias by intra-patient clustering unlikely.

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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.