Confluence of depression and acute psychological stress among patients with stable coronary heart disease: effects on myocardial perfusion.

J Am Heart Assoc · 2014 · PMC4338683 · PMID 25359402

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failed to reach significanceno p-value reported

The sample size was also relatively small, and many of the statistical tests failed to reach 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.