The incidence and risk factors for postoperative urinary retention in neurosurgical patients.

Surg Neurol Int · 2013 · PMC3680996 · PMID 23772331

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a positive trendno p-value reported

This difference was not statistically significant, however, it showed a positive trend.

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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.