Long term survival with thoracoscopic versus open lobectomy: propensity matched comparative analysis using SEER-Medicare database.

BMJ · 2014 · PMC4183188 · PMID 25277994

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difference was apparentno p-value reported

However, we used propensity scores to create comparable cohorts; in our propensity matched analysis, no significant difference was apparent in overall, cancer specific, or disease-free survival between the two groups.

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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.