Mediastinal lymph node dissection versus mediastinal lymph node sampling for early stage non-small cell lung cancer: a systematic review and meta-analysis.

PLoS One · 2014 · PMC4190366 · PMID 25296033

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did not reach statistical significanceno p-value reported

Although the point estimates in the current meta-analysis indicate a slight benefit in MLND, these did not reach statistical 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.