Virus transmission during orthopedic surgery on patients with COVID-19 - a brief narrative review.

Acta Orthop · 2020 · PMC8023894 · PMID 32408845

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showed a trendno p-value reported

It must still be emphasized that data from the SARS outbreak in Toronto showed a trend in favor of N95 respirators over surgical masks for HCWs involved in respiratory tract procedures.

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did not reach statistical significanceno p-value reported

The difference did not reach statistical significance, but the number of nurses included was low for this sub-analysis (n = 20, 3 infected) (Loeb et al. 2004 ).

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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.