User guide

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As per the stratified Clarke Error Grid analysis above, agreement between Guardian RT values and YSI
values tends to be less at low and high glucose concentrations when compared to other concentration
ranges.
Guardian RT performance in the hypoglycemic range, as a function of sensor insertion time, is
characterized below. Results from the two different data sets are presented. The two populations were
separated according to the number of calibrations per day. This table represents the percentage of Data
Points in the 40-80 mg/dL (2.2 - 4.4 mmol/L) range that fell within 20 mg/dL (1.1 mmol/L). Data is
presented in 12-hour increments.
Data Set 0-12 hrs 12-24 hrs 24-36 hrs 36-48 hrs 48-60 hrs 60-72 hrs
A 78% 81% 73% 65% 56% 41%
B 67% 70% 93% 60% 75% 38%
Appendix A142