Dexcom G4 Professional User Manual page 186

The total number of data pairs considered in this analysis was 9152. Of
these, eighty-two percent (82%) of the System readings fall within ±20
mg/dL (1.1 mmol/L) of the YSI blood glucose values (≤ 80 mg/dL or 4.4
mmol/L) and within ±20% of YSI blood glucose values (> 80 mg/dL or
4.4 mmol/L).
Table 1-A. System Agreement to YSI within CGM
Glucose Ranges
CGM
Glucose Number
Range of paired
mg/dL CGM-YSI
(mmol/L)
Overall
40-60
(2.2-3.3)
61-80
(3.4-4.4)
81-180
(4.5-10.0)
181-300
(10.1-16.7)
301-350
(16.7-19.4)
351-400
(19.4-22.2)
NOTE: CGM readings are within 40-400 mg/dL (2.2-22.2 mmol/L),
inclusive.
Table 1-A is categorized within CGM glucose ranges. When you see
a CGM reading on your receiver, this table shows you how likely that
reading matches your blood glucose level (measured by YSI in the
study). For example, if your CGM reads 100 mg/dL (5.6 mmol/L), it is
Percent
within
15/15%
YSI
9152 71%
512 67%
781 73%
3853 67%
2784 72%
775 82%
447 74%
Dexcom G4 PLATINUM Professional System User's Guide
Percent Percent
within within
20/20% 30/30%
YSI YSI
82% 92%
78% 88%
85% 94%
78% 91%
84% 93%
91% 97%
84% 91%
Percent
Percent
Greater
within
than
40/40%
40/40%
YSI
YSI
97% 3%
94% 6%
98% 2%
97% 3%
96% 4%
98% 2%
95% 5%
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