Powered bone marrow biopsy procedures produce larger core specimens, with less pain, in less time than with standard manual devices.

Hematol Rep · 2011 · PMC3238476 · PMID 22184530

Europe PMC DOI

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did not reach statistical significanceno p-value reported

While the difference in the intensity of the pain did not reach statistical significance in several of the parameters tested, there is little doubt that the duration of the pain was substantially longer in the Manual arm of the study.

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showed a trendno p-value reported

While the Powered bone marrow biopsy showed a trend toward decreased pain overall at the time of the procedures, use of the Powered bone marrow biopsy device did significantly decreased overall procedure pain when subjects considered the two procedures retrospectively.

also in 53,322 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.