Figure. Effect of lesion-years on time to first CHD diagnosis, adjusted for demographic, medical, and dental covariates. Adjustment for baseline values of education, income, total cholesterol, triglycerides, diabetes, hypertension, smoking, BMI, mean alveolar bone loss, number of teeth, number of teeth with LEO, and number of endodontically treated teeth. Solid line = hazard ratio estimate; dotted lines = upper and lower 95% confidence intervals.