Clinical Studies

Single-digit MARD demonstrated in software used in Dexcom G5 Mobile CGM System

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In this open-label, single-arm, multicenter clinical study, the Dexcom G4 PLATINUM Continuous Glucose Monitoring (CGM) System (which uses the same software 505 as the Dexcom G5 Mobile CGM System) was evaluated for accuracy in 51 subjects 18 years of age or older. Highlights of the results included:

  • Overall MARD* of 9%
  • Accuracy of readings in Clarke Error Grid Zone A: 92%
  • Hypoglycemia detection rate (70 mg/dL): 91%  
  • Hyperglycemia detection rate (180 mg/dL): 99%‡
  • Sensor reliability: 94% of sensors lasted until day 7

*MARD is a statistical measure of accuracy used as the industry standard in glucose monitoring to represent peformance; the lower the number, the better.

Percent of time alert sounds within a 15-minute period before or after glucose levels fall below 70 mg/dL (as measured by YSI blood glucose analyzer).

Percent of time alert sounds within a 15-minute period before or after glucose levels rise above 180 mg/dL (as measured by YSI blood glucose analyzer).

Source: Bailey TS, Chang A, Christiansen M. Clinical accuracy of a continuous glucose monitoring system with an advanced algorithm. J Diabetes Sci Technol. 2015;9(2):209-14.

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