Is qualitative research second class science? A quantitative longitudinal examination of qualitative research in medical journals.

PLoS One · 2011 · PMC3044713 · PMID 21383987

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of borderline significanceno p-value reported

Additionally, the association between country of publication and the proportion of qualitative research was of borderline significance.

also in 2,101 other papers

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.