Agreement on Day 1 against YSI Reference
The accuracy of GM versus YSI reference on the rst day of sensor wear was assessed by calculating
the percentage of System readings that were within 15%, 20%, 30% and 40% for reference values
80 mg/dL and above, and 15 mg/dL, 20 mg/dL, 30 mg/dL and 40 mg/dL for values below 80 mg/dL
by hourly intervals. The results are presented in Table 3.
Table 3: Number and Percent of Results within YSI Reference
Time
Interval
(hour)
Number
of GM-
Reference
Pairs
Within
±15% /
±15 mg/dL
Within
±20% /
±20 mg/dL
Within
±30% /
±30 mg/dL
Within
±40% /
±40 mg/dL
Outside
±40% /
±40 mg/dL
(0-2) 235 60.9 73.2 92.8 98.3 1.7
(2-4) 552 67.4 77.7 90.4 96.4 3.6
(4-6] 557 61.4 74.3 89.2 95.9 4.1
(6-8] 534 65.5 80.5 94.0 98.3 1.7
(8-12] 239 66.1 83.3 97.9 99.2 0.8
(12-24] 436 59.9 77.1 93.6 97.7 2.3
47
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