Critical serum creatinine values in very preterm newborns.

PLoS One · 2013 · PMC3875547 · PMID 24386431

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at the limit of significanceno p-value reported

However, after adjusting for confounding variables (except for changes in sodium), we found the association to be at the limit of significance.

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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.