Figure 2. British Regional Heart Study. Coronary heart disease event rates after 11 years of follow-up according to the quintile of serum specific insulin concentration at baseline. The numbers in parentheses are the numbers of men in each quintile and the numbers above the bars are the number of men experiencing an event. Reprinted with permission of the American Journal of Epidemiology, Johns Hopkins University School of Hygiene and Public Health (Perry et al⁴¹).