A randomised controlled trial of proactive telephone counselling on cold-called smokers' cessation rates.

Tob Control · 2011 · PMC3003878 · PMID 21030529

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failed to reach significanceno p-value reported

The 3-month prolonged abstinence measure failed to reach significance at 7-month follow-up.

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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.