Dexcom G7 - Page 158

E • Technical Information | Dexcom G7 User Guide 151
Table 8-B. Data availability rate by wear day – pediatrics 2-6 YO upper
buttocks (n=16)
Wear day Number of sensors Data availability rate (%)
1
2
3
4
5
6
7
8
9
10
16
15
13
13
13
13
13
11
10
10
98.9
99.1
99.7
99.6
99.1
98.0
97.9
98.7
98.0
96.1
Precision of system readings
A subset of subjects wore two G7s at the same time (n=82). This was to look at how
similarly two systems function on the same subject (sensor precision) under the same
conditions. Precision was evaluated by comparing the glucose readings from the two
systems worn on the same subject at the same time on the same location.
Table 9 shows the sensor readings from the two sensors had better agreement when
CGM sensor readings from the two sensors worn at the same location were paired.
For adults (18+ years old), the paired absolute relative difference (PARD) between the
two systems was 8.9% and the coefficient of variation (CV) was 6.3%. For pediatrics
(2-6 years old) wearing sensors on the arm, the PARD was 6.1% and the CV was
4.3%.