User`s guide

Dexcom G4 PLATINUM Professional System User’s Guide | 189
glucose ranges above and below the paired CGM readings.
Table 3. Concurrence of CGM Readings and YSI Values
CGM
mg/dL
(mmol/L)
YSI mg/dL (mmol/L)
Percent of matched pairs in each YSI glucose range
for each Sensor glucose range
< 40
(< 2.2)
40-
60
(2.2-
3.3)
61-
80
(3.4-
4.4)
81-
120
(4.5-
6.7)
121-
160
(6.7-
8.9)
161-
200
(8.9-
11.1)
201-
250
(11.1-
13.9)
251-
300
(13.9-
16.7)
301-
350
(16.7-
19.4)
351-
400
(19.4-
22.2)
> 400
(> 22.2)
Number
of
Paired
CGM-
YSI
< 40
(< 2.2)
6% 48% 37% 7% 1% 0% 0% 0% 0% 0% 0% 155
40-60
(2.2-3.3)
4% 49% 36% 11% 1% 0% 0% 0% 0% 0% 0% 512
61-80
(3.4-4.4)
0% 22% 51% 24% 1% 0% 0% 0% 0% 0% 0% 781
81-120
(4.5-6.7)
0% 2% 17% 66% 13% 1% 0% 0% 0% 0% 0% 1706
121-160
(6.7-8.9)
0% 0% 1% 25% 60% 13% 2% 0% 0% 0% 0% 1492
161-200
(8.9-11.1)
0% 0% 0% 2% 28% 53% 16% 2% 0% 0% 0% 1240
201- 250
(11.1- 13.9)
0% 0% 0% 0% 3% 21% 51% 21% 3% 1% 0% 1181
251- 300
(13.9- 16.7)
0% 0% 0% 0% 0% 4% 19% 49% 24% 3% 0% 1018
301- 350
(16.7- 19.4)
0% 0% 0% 0% 0% 0% 3% 28% 51% 16% 1% 775
351- 400
(19.4- 22.2)
0% 0% 0% 0% 0% 0% 3% 10% 43% 38% 7% 447
> 400
(> 22.2)
0% 0% 0% 0% 0% 0% 1% 6% 21% 57% 15% 248
Accuracy
Accuracy between matched pairs was also estimated by calculating the
percent difference between the System reading and the YSI value. For
example, if the YSI value is 100 mg/dL (5.6 mmol/L) and the System