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. 2010 Nov;105(11):2002–2013. doi: 10.1111/j.1360-0443.2010.03058.x

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© 2010 Society for the Study of Addiction

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Cumulative contributions of immediate quitters (IQs) and delayed quitters (DQs) to continuous abstinence rates, week X to week 12. Varenicline versus bupropion SR IQs (24.0%, 18.0%; P= 0.007); DQs (20.0%, 11.6%; P< 0.001). Varenicline versus placebo IQs (24.0%, 10.2%; P< 0.001); DQs (20.0%, 7.5%; P < 0.001). Bupropion SR versus placebo IQs (18.0%, 10.2%; P< 0.001) and DQs (11.6%, 7.5%; P= 0.009)