Figure 3From: Systematic review of the epidemiological evidence comparing lung cancer risk in smokers of mentholated and unmentholated cigarettes Funnel plot for risk of lung cancer by use of mentholated cigarettes. Funnel plot of the eight relative risk estimates for use of mentholated cigarettes and lung cancer shown in Figure 2 against their weight (inverse-variance of log RR.) The dotted vertical line indicates the fixed-effect meta-analysis estimate.Back to article page