Image quality to estimate ventricular ejection fraction by last year medical students improves after short courses of training.

BMC Med Educ · 2019 · PMC6805468 · PMID 31640642

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showed a trendno p-value reported

Both, eye-balling method and calculation of ejection fraction showed a trend towards a more precise determination, but they did not show any statistical significance.

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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.