Hughes 2011*

Methods
Participants
Interventions
Outcomes
Treatment type
Notes	Treated as an included study in order to contribute to adverse event meta‐analyses; Excluded for efficacy: 218 smokers not ready to quit assigned to varenicline or placebo for 2 ‐ 8 weeks for cigarette reduction; abstinence was not the outcome of interest, although measured in those who made a quit attempt. Primary outcome was incidence of quit attempts over 6m.