Figure 1
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2458-13-18/MediaObjects/12889_2012_Article_4870_Fig1_HTML.jpg)
Forest plot of estimates of absolute change in the prevalence of adult smokers two years after the introduction of plain packaging (holding other factors constant). [Prevalence rates provided to experts were: Britain: 21%; Australia: 18%; Canada: 17.5%].