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The varenicline group achieved a 30.3% abstinence rate compared to 19.6% for the bupropion group at the end of treatment a difference that is statistically significant

1 Wheezing and coughing are more common in children who breathe secondhand smoke

The mean RR of lung cancer at 20 pack-years of smoking was 5.11 (95% uncertainty interval (UI) inclusive of between-study heterogeneity = 1.8414.99)

Retrieved 22 March 2009

178 Proctor 2000, p
