Sensor readings show minimal variance in performance
Consensus Error Grid Analysis evaluating CGM accuracy with regard to clinical decisions. 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
YSI Reference (mg/dL).
93.3% of glucose results within Zone A.
*Defined by FDA iCGM Special Controls.
†MARD (mean absolute relative difference) is compared to reference YSI (Yellow Springs Instrument) values.
‡Calculated based on the percentage of system readings within ±20 mg/dL of YSI blood glucose values <70 mg/dL and within ±20% of YSI blood glucose values ≥70 mg/dL.
Reference: 1. FreeStyle Libre 2 system User’s Manual. 2. Data on file. Abbott Diabetes Care.
ADC-21508 v1.0 06/20