User`s guide

Dexcom G4 PLATINUM Professional System User’s Guide | 191
Table 4-A. System Difference to YSI within CGM
Glucose Ranges
CGM
Glucose
Ranges
mg/dL
(mmol/L)
Number
of Paired
CGM-YSI
Mean
Percent
Difference
(%)
Median
Percent
Difference
(%)
Mean
Absolute
Percent
Difference
(%)
Median
Absolute
Percent
Difference
(%)
Overall 9152 2.9 1.7 13.3 9.8
*40-60
(2.2-3.3)
512
-10.0
(-0.6)
-8.2
(-5.2)
13.5
(0.8)
9.7
(0.5)
*61-80
(3.4-4.4)
781
-2.4
(- 0.1)
-0.4
(-0.0)
11.4
(0.6)
8.6
(0.5)
81-180
(4.5-10.0)
3853 4.8 3.0 13.8 9.8
181-300
(10.1-16.7)
2784 2.1 0.0 11.9 9.2
301-350
(16.7-19.4)
775 3.8 2.8 9.8 7.9
351-400
(19.4-22.2)
447 10.4 7.7 12.8 9.1
*ForCGM≤80mg/dL(4.4mmol/L),thedifferencesinmg/dL(mmol/L)
areincludedinsteadofpercentdifferences(%).
NOTE: CGM readings are within 40 to 400 mg/dL (2.2- 22.2 mmol/L),
inclusive.
Table 4-A is categorized within CGM glucose ranges. For example, on
average, CGM reads 10.0 mg/dL (0.6 mmol/L) lower than the reference
at CGM glucose levels of 40-60 mg/dL (2.2-3.3 mmol/L) and reads 2.4
mg/dL (0.1 mmol/L) lower than the reference at CGM glucose level of
61-80mg/dL(MeanDifference,i.e.3.4-4.4mmol/L),9.8%differentthan
the reference at CGM glucose values of 301-350 mg/dL (Mean Absolute
PercentDifference,i.e.16.7-19.4mmol/L),and12.8%differentthan