CHD Risk According to HDL-C Levels The Framingham Heart Study 4.0 CHD risk ratio 3.0 2.0 1.0 0 25 45 65 HDL-C (mg/dL) Kannel WB. Am J Cardiol 1983;52:9B-12B. Copyright ©1983, with permission from Excerpta Medica Inc. 4.0 2.0 1.0