Dexcom G4 Professional User Manual page 200

the System over the entire 7-day period after calibration. For example,
93.5% of Systems provided between 1,811 and 1,992 valid glucose
readings (or more than 76% of the expected number of readings).
Adjusted within each system wear-day, the System provided an average
of 97% of all expected glucose readings (288) as seen in Table 10.
Table 9. Number of Readings Provided by Each Sensor
Over 7-Days
% of Total Possible
Readings Provided
0-25%
26-50%
51-75%
76-100%
Table 10. System Readings Within Wear Days
Statistic Day 1 Day 2 Day 3
Mean 98%
Median 100%
STD 5%
Agreement and Accuracy Relative to SMBG
During the study, agreement between the System and blood glucose
values is also characterized using paired System and SMBG results.
The System and SMBG values were compared by pairing the
comparative SMBG value to a System glucose reading that occurred
immediately after the SMBG was collected. These results characterize
the performance patients expect during real-time use of the system in
Total
Readings
Provided
(Min-Max)
167-491
719-914
1267-1267
1811-1992
Day 4
98% 98% 98%
100% 100% 100%
3% 9% 8%
Dexcom G4 PLATINUM Professional System User's Guide
% of Systems Providing
that Number of Readings
1.9%
3.7%
0.9%
93.5%
Day 5 Day 6 Day 7
97% 99%
100% 100% 100%
10% 3%
All Days
(N = 108)
95% 97%
100%
11% 8%
| 199