Fig. 1

Illustration of four classification scenarios according to boundary limit of 7.5 % due to the uncertainty of clinical measurements on predicted ten-year atherosclerotic cardiovascular disease risk using the new pooled cohort equations. Scenario a, the base calculated ten-year risk is well below the boundary limit, the variation in clinical measurements does not result in the change in risk category; For scenario b when the base calculated ten-year risk is below or close to the boundary limit, and scenario c when the base calculated ten-year risk is equal to or slightly beyond the boundary limit, the variation in clinical measurements may result in the change in risk category; Scenario d, the base calculated ten-year risk is well beyond the boundary limit, the variation in clinical measurements does not result in the change in risk category