In a further aspect of the invention, the calculated results may be communicated as a graphical output 196, such as is illustrated in FIG. 27. The graphical output 196 may be accessed by pressing a graph report button 198 on the report output dialog box (FIG. 26). The graphical output 196 is useful to further illustrate to the physician and the patient the changes in the calculated risk value over time, and in relation to the cholesterol levels. The graphical output 196 is also useful as a further tool in enabling a patient to understand the relationship between their health habits and the associated risk factor, and in encouraging the patient to participate in their own medical decision making.