Patients with advanced periodontal disease before intensity-modulated radiation therapy are prone to develop bone healing problems: a 2-year prospective follow-up study.

Support Care Cancer · 2018 · PMC5847027 · PMID 29090383

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a strong trendno p-value reported

There seems to be a strong trend, however, and our study may have been underpowered to find a significant difference.

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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.