Preliminary examination of the efficacy and safety of a standardized chamomile extract for chronic primary insomnia: a randomized placebo-controlled pilot study.

BMC Complement Altern Med · 2011 · PMC3198755 · PMID 21939549

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did not reach statistical significanceno p-value reported

Chamomile did show modest advantage on daytime functioning, although these did not reach 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.