Figure 2
Hazard ratios (HRs) associated with a 2 kg/m 2 higher body mass index for ischaemic stroke events in current smokers and non-smokers, by sex, region, age and overall. Analyses are adjusted by age and stratified by study and sex. The horizontal lines (or widths of diamonds for overall results) show 95% confidence intervals (CIs). The p values shown are for the test of interaction between body mass index and smoking status. The dashed and continuous lines represent current smokers and non-smokers, respectively.