OVER
18 Appendix B: Specifications
(con’t)
Performance Over the Duration of Wear
This section presents the performance data in a variety of ways to demonstrate the performance of
the system over time during the entire sensor wear period. The sensor is worn on the body for up
to 5 days, during which time the system has to be calibrated 4 times. Typically, the system has to be
calibrated at 10, 12, 24 and 72 hours after sensor insertion. Data presented in this section demonstrates
how the sensor performs as a function of time.
Sensor Stability
Tables 6a-6b show there is little difference in accuracy over the five days of sensor wear according to
the Clarke Error Grid Analysis (Table 6a) and the Continuous Glucose-Error Grid Analysis (Table 6b).
Table 6a.
Clarke Error Grid Analysis by day of wear
Zone
Day 1
Day 2
Day 3
Day 4
Day 5
%
%
%
%
%
A
82.5
82.4
79.4
84.0
80.9
B
16.4
16.6
18.3
14.2
16.9
C
0.2
0.1
0.0
0.0
0.0
D
0.9
0.9
2.2
1.8
2.1
E
0.0
0.1
0.0
0.0
0.0
Overall Mean Absolute
Relative Difference (%)
MARD0
12.6
12.3
14.1
11.9
13.0
Table 6b.
Continuous Error Grid Analysis by day of wear
Zone
Day 1
Day 2
Day 3
Day 4
Day 5
%
%
%
%
%
Accurate
Readings
97.9
97.8
97.1
97.4
97.3
Benign
Errors
1.0
1.2
0.7
0.8
0.8
Erroneous
Readings
1.1
1.0
2.2
1.8
1.9
Table 6c groups the difference between glucose results from the FreeStyle Navigator system and the
YSI into different blocks (within 20%, within 30% and within 40% from the YSI). It shows there is little
change in the difference from YSI over time, thus demonstrating sensor stability.
Table 6c.
Difference from the YSI at different times after sensor insertion
Time After Insertion
(hours)
Percent Readings
Within 20% of the
YSI*
Percent Readings
Within 30% of the
YSI*
Percent Readings
Within 40% of the
YSI*
10-12
86
92
96
12-24
82
93
97
24-72
81
92
97
72-122
82
93
97
*The absolute difference from the YSI reading is measured in mg/dL if the YSI reading is at or below
75 mg/dL.
Section 18
157
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 ...
Page 192: ...Customer Care 1 866 597 5520 ...
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