The clinical significance of preoperative serum levels of carbohydrate antigen 19-9 in colorectal cancer.

J Korean Surg Soc · 2013 · PMC3616277 · PMID 23577318

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did not reach statistical significanceno p-value reported

But the risk of obstruction did not reach statistical significance on multivariate analysis for peritoneal seeding.

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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.