Preoperative anemia increases mortality and postoperative morbidity after cardiac surgery.

J Cardiothorac Surg · 2014 · PMC4237817 · PMID 25096231

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mildly significantno p-value reported

demonstrated that low preoperative hemoglobin level was not an independent risk factor for early mortality after CABG and that it was only mildly significant for morbidity even in octogenarian patients [ 13 , 14 ].

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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.