The child's perspective on discomfort during medical research procedures: a descriptive study.

BMJ Open · 2017 · PMC5642655 · PMID 28765130

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showed a trendno p-value reported

Anxiety-proneness, measured with the CBCL (p=0.09), and discomfort showed a trend for a correlation.

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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.