Abbott FreeStyle Libre 2 - Concurrence of System and Reference (CGM vs. YSI)

Table 1b: Accuracy to YSI within CGM Glucose Ranges (Adult; n=144)
CGM
Glucose
Level
†
(mg/dL)
Number
of CGM-
Reference
Pairs
Percent
Within
±15 mg/dL
Percent
Within
±20 mg/dL
Percent
Within
±40 mg/dL
Percent
Within
±15%
Percent
Within
±20%
Percent
Within
±40%
Mean
bias
(mg/dL)
MARD
(%)
<54 518 85.9 93.8 99.4 -6.4 13.8
54-69 3012 89.5 94.2 99.1 -3.3 10.8
70-180 7785 76.5 86.6 99.2 -4.8 10.6
181-250 3037 89.1 95.0 99.9 -10.1 7.8
>250 4383 94.0 97.9 100.0 -6.3 6.1
†
System range is 40-400 mg/dL.
188