Quit in general practice: a cluster randomised trial of enhanced in-practice support for smoking cessation.

BMC Fam Pract · 2010 · PMC2931485 · PMID 20701812

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did not reach statistical significanceno p-value reported

At 12 month follow-up patients in the referral intervention had a higher rate of sustained abstinence (6.5% compared to 2.6%), however this did not reach statistical significance [ 16 ].

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