Longitudinal study of hippocampal volumes in heavy cannabis users.

J Psychopharmacol · 2017 · PMC5544121 · PMID 28741422

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a statistical trendno p-value reported

Cannabis users and controls did not significantly differ on premorbid IQ (DART) and alcohol dependence (AUDIT), while onset of nicotine use showed a statistical trend.

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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.