Nightmares in the general population: identifying potential causal factors.

Soc Psychiatry Psychiatr Epidemiol · 2017 · PMC5581821 · PMID 28712041

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highly significantno p-value reported

Nightmare occurrences was unrelated to sex and ethnicity. Bivariate Pearson’s correlations between nightmare severity and the independent variables were highly significant.

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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.