Patent ID: 8117020

Claim:
A method for determining a stability of a blood glucose concentration of a patient, the method comprising: receiving, at a processor, a plurality of blood glucose concentration test results each taken from the patient at a different time over a time period; approximating, by the processor, a plurality of blood glucose concentration test result values as functions of time from consecutive samples of the plurality of blood glucose concentration test results; computing, by the processor, a time averaged glucose value as a first indicator by averaging the approximated blood glucose concentration test result values over the time period such that the first indicator is an indication of a blood glucose control normalized for each time interval between the consecutive samples; applying, by the processor, a time-based weight to each of the blood glucose concentration test results by multiplying each of the blood glucose concentration test results by a respective coefficient, wherein the weights are time-based such that each successive coefficient is less than each previous coefficient as a function of increasing time; computing, by the processor, a weighted average by averaging the time-based weighted blood glucose concentration test results; computing, by the processor, a simulated measurement of a blood hemoglobin as a second indicator by correlating with a pre-determined formula the weighted average of the time-based weighted blood glucose concentration test results and the blood hemoglobin; computing, by the processor, a variance of the blood glucose concentration test results; computing, by the processor, a standard deviation from of the variance of the blood glucose concentration test results; computing, by the processor, a ratio of the standard deviation to the time averaged glucose value to give a third indicator representing variability of blood glucose concentration over the time period; and providing, by the processor, the first, second, and third indicators to a user interface or display.