Forest plot of study-specific estimates and 95% CIs for mentholated cigarette use. The figure plots the eight combined gender/combined race estimates for use of mentholated cigarettes in ever smokers (or current smokers if not available). Precise definitions of the comparison used for each study are given in Table 17. Each estimate is shown as a square with its area proportional to its weight. The CI is indicated by a horizontal line. The data are plotted on a logarithmic scale so that the estimate is centred in the CI. Also shown in the plot are the actual values of the estimate and its CI and weight. Results from a random effects meta-analysis are also shown. The combined estimate is presented as a diamond with the width corresponding to the CI, and the estimate as the centre of the diamond.