Dexcom Pro Q User Manual page 51

Table 1-I. G6 Accuracy to YSI within YSI Glucose Ranges
(Pediatrics*, Buttocks; n=66)
YSI
Number
Glucose
of paired
Range
CGM-YSI
(mg/dL)
<54 19
54-69 108
70-180 1,195
181-250 640
>250 314
* Includes pediatric subjects 6-17 years of age; no YSI measurements were taken for
pediatric subjects 2-5 years of age.
Trend Accuracy
Trend accuracy explains how well the G6 captures the time-dependent characteristics
of glucose fluctuation.
The following examples quantify G6's Trend Accuracy:
1. When the G6 CGM rate of change is rapidly rising (≥ 2 mg/dL/min), how often is
reference glucose also rising? The answer is 71.3% of the time for adults and
67.1% for pediatrics.
2. When the G6 CGM rate of change is rapidly falling (≤ 2 mg/dl/ min), how often is
reference glucose also falling? The answer is 98.0% of the time.
3. When the G6 CGM rate of change is stable (≥ -1 mg/dL/min and ≤ 1 mg/dl/ min),
how often is glucose changing rapidly (≥ 2 mg/dL/min or ≤ 2 mg/dl/ min)? The
answer is only 1.9% of the time.
Dexcom Pro Q ™ System User Guide
Appendix E: Technical Information
Percent Percent Percent
within within within
15 mg/dL 20 mg/dL 40 mg/dL
YSI YSI YSI
89.5 100.0
78.7 93.5
Percent Percent
within within
15% 20%
YSI YSI
100.0
100.0
80.8 92.0
84.8 91.4
84.7 90.4
Percent
Mean
within
MARD
bias
40% (%)
(mg/dL)
YSI
6.2 12.6
2.4 15.2
99.2 3.8 9.3
100.0 -0.1 8.8
100.0 -2.1 7.8
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