Consensus Error Grid is a tool for evaluating accuracy and can be useful for assessing clinical performance. CGM errors are translated into the potential clinical consequences of the errors. Data are plotted vs YSI reference in the scatterplot, and the error grid is divided into zones, with Zone A representing the greatest accuracy:
Zone A: No effect on clinical action (considered clinically accurate)
Zone B: Altered clinical action, but no or little effect on clinical outcome
Zone C: Altered clinical action—likely to affect clinical outcome
Zone D: Altered clinical action—could have significant medical risk
Zone E: Altered clinical action—could have dangerous consequences
Reference: 1. FreeStyle Libre Pro Operator’s Manual. 2. Bailey T, Bode BW, Christiansen MP, Klaff LJ, Alva S. The performance and usability of a factory-calibrated flash glucose monitoring system. Diabetes Technol Ther. 2015;17:787-794. 3. Data on file. Abbott Diabetes Care.
ADC-05531 Ver 1.0 10/17
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