Freestyle LIBRE PRO - Page 29

Table 6: Dierence Measures by BG Reference Levels*
BG Reference
Reference Glucose
Level (mg/dL)
Number of GM-
Reference Pairs
Median Absolute
Relative Dierence (%)
Mean Absolute Relative
Dierence (%)
Overall 11918 11.1 13.9
40-50** 152 13.5 19.1
51-80** 841 10.0 12.6
81-180 6397 10.9 13.5
181-300 3719 10.9 12.9
301-400 695 9.1 11.3
401-500 114 7.1 9.2
* Comparison to BG was performed using the FreeStyle Precision blood glucose meter. Dierent performance may be expected when compared to
other models of blood glucose meters.
** For reference values ≤ 80 mg/dL, the mean and median absolute dierences (mg/dL) are presented instead of mean and median absolute relative
dierences (%).
Overall Accuracy against BG Reference
Accuracy was measured by comparing the absolute relative dierence between the System and
reference BG values. The absolute relative dierence measures the level of disagreement between
the System and the reference value, but does not tell you whether the System glucose value was, on
average, higher or lower than the reference glucose value. The Mean Absolute Relative Dierence
gives an indication of the average percent disagreement between the GM and the reference.
Table 6 shows the absolute dierence measures by glucose level. Overall the Mean Absolute
Relative Dierence was 13.9% for the comparison with BG reference. The Median Absolute Relative
Dierence shows that half of the time the System was within 11.1% of the BG reference.
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