By comparing graphs and statistics of different periods, you can analyse the evolution of your blood glucose level. You are also able to compare your mesures based on the time slots you have defined (before breakfast, after breakfast, before lunch, ...).

Let's take the case of a patient whose medical treatment has been recently changed as an example. Judging by the following statistics, taken before and after the change of treatment, he is be able to determine that this change was beneficial:

Before (click on the following image to view it at its original size):

View the corresponding Mac OS X screenshot

After (click on the following image to view it at its original size):

View the corresponding Mac OS X screenshot

The trends being analysable from several points of view, the user can for example draw the same kind of conclusion by comparing the blood glucose level graphs of the appropriate periods.