Comparing the McGrath Mac Video Laryngoscope and Direct Laryngoscopy for Prehospital Emergency Intubation in Air Rescue Patients: A Multicenter, Randomized, Controlled Trial.

Crit Care Med · 2019 · PMC6791500 · PMID 31389835

Europe PMC DOI

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closest p

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highly significantno p-value reported

The main reasons for failed TI attempts with the McGrathVL were the impossibility to advance the tube into the larynx or trachea, or disturbances caused by ambient light, which was highly significant in trauma patients (in 13.5% of DL patients vs 73.3% of VL patients).

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did not reach statistical significanceno p-value reported

This did not reach statistical significance, but the subgroups were too small to draw a meaningful conclusion.

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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.