Study of the effect of mint oil on nausea and vomiting during pregnancy.

Iran Red Crescent Med J · 2012 · PMC3560544 · PMID 23396673

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a decreasing trendno p-value reported

an increasing trendno p-value reported

But during intervention, the severity of nausea showed a decreasing trend (especially in 4th night) in the mint and an increasing trend in the control group.

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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.