18 Appendix B: Specifications
(con’t)
Accuracy
Table 1
below shows the distribution of all the data from the In-Clinic study on the Clarke Error Grid. Accuracy
was assessed by comparing the differences between the FreeStyle Navigator system and the YSI laboratory reference.
The Clarke Error Grid Analysis evaluates the clinical relevance of the differences by dividing a correlation plot
(Figure 1) into five zones as described in Table 1. The YSI results and the corresponding glucose results from the
FreeStyle Navigator system together (called a ‘data pair’ or ‘matched data points’) determine what zone of the error
grid the results fall into. Table 1 also shows that glucose data measured by FreeStyle Navigator system on the arm
and on the abdomen have similar distribution on the error grid. This demonstrates that there is no difference in the
performance of the system when worn on the abdomen or on the back of the upper arm.
Table 1.
Clarke Error Grid Analysis. Continuous glucose results from FreeStyle Navigator System (mg/dL)
vs. the YSI (mg/dL)
Zone in the Clarke
Error Grid
N (pairs of data)
Percentage in the
different zones (%)
Sensor Insertion Site
Abdomen %
Arm %
A
16627
81.7
81.5
81.8
B
3398
16.7
16.8
16.6
C
19
0.1
0.1
0.1
D
316
1.6
1.6
1.5
E
2
0.0
0.0
0.0
Total
20362
There is no difference between the performance of the
system on the arm and the performance of the system on
the abdomen.
Error Grid Explanation
A
– Clinically accurate; would lead to correct and safe treatment
B
– Benign; would lead to benign decisions or no treatment decisions
C
– Overcorrection; would lead to over-correction of normal glucose levels
D
– Failure to detect; would lead to failure to detect and treat high or low glucose levels
E
– Erroneous readings; would lead to erroneous treatment decisions
Customer Care: 1-866-597-5520
154
Section 18
Appendix B: Specifications
Summary of Contents for FreeStyle Navigator
Page 2: ......
Page 4: ......
Page 8: ......
Page 9: ...1 Getting Acquainted ...
Page 23: ...2 Install or Replace Transmitter and Receiver Batteries ...
Page 29: ...3 Set the Time and Date ...
Page 34: ...Customer Care 1 866 597 5520 ...
Page 35: ...4 Perform a Control Solution Test ...
Page 42: ...Customer Care 1 866 597 5520 ...
Page 43: ...5 Insert or Remove Your Sensor ...
Page 54: ...Customer Care 1 866 597 5520 ...
Page 55: ...6 Attach Your Transmitter ...
Page 61: ...7 Calibrate Your System Test Blood Glucose Manually ...
Page 74: ...Customer Care 1 866 597 5520 ...
Page 75: ...8 Set Review or Change the Alarm Settings ...
Page 89: ...9 Daily Use ...
Page 96: ...Customer Care 1 866 597 5520 ...
Page 97: ...10 Respond to Alarms Errors and Problems ...
Page 119: ...11 Add Events ...
Page 125: ...12 Review Reports and Edit Events ...
Page 135: ...13 Clean Your System ...
Page 136: ...Section 13 Key Terms n Receiver n Transmitter n Contact Points Customer Care 1 866 597 5520 ...
Page 139: ...14 Link and Unlink Your Transmitter and Receiver ...
Page 144: ...Customer Care 1 866 597 5520 ...
Page 145: ...15 Reset User Settings ...
Page 146: ...Customer Care 1 866 597 5520 ...
Page 149: ...16 Change Country Settings ...
Page 155: ...17 Appendix A Site Maintenance ...
Page 158: ...Customer Care 1 866 597 5520 ...
Page 159: ...18 Appendix B Specifications ...
Page 173: ...19 Appendix C FCC Compliance Information ...
Page 174: ...Customer Care 1 866 597 5520 164 Section 18 Appendix B Specifications ...
Page 182: ...Customer Care 1 866 597 5520 ...
Page 183: ...20 Glossary ...
Page 184: ...Customer Care 1 866 597 5520 174 Section 19 Appendix C Classification Compliance Declaration ...
Page 191: ...21 Index ...
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