
Agreement between the matched pair was estimated by evaluating the difference between the Guardian
RT reading and the blood glucose meter measurement. The difference between them was calculated as a
percentage of the blood glucose meter measurement (Mean Absolute Percent Difference). The bias was
also calculated, and it is defined as the overall difference between the Guardian RT glucose values and
the blood glucose meter values. The paired glucose measurements are summarized in the following table
Number of Paired Glucose Measurements 2599
Mean Absolute Percent Difference (± SD) 19.0 ± 19.7%
Bias -6.0 mg/dL (-0.3 mmol/L)
Appendix A148
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