Advance directives for future dementia can be modified by a brief video presentation on dementia care: An experimental study.

PLoS One · 2018 · PMC5967707 · PMID 29795605

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highly significantno p-value reported

In fact we observed a strong and highly significant covariate effect of the baseline score on post-film scores with a partial Eta 2 of 0.69.

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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.