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16 • Technical Information | Stelo Glucose Biosensor User Guide 93
Trend accuracy
Trend accuracy explains how well Stelo Glucose Biosensor System captures the time-
dependent characteristics of glucose fluctuation. The following examples quantify the
trend accuracy:
1.
When the Biosensor rate of change is rapidly rising (> 2 mg/dL/min), how
often is reference glucose also trending up (>0 mg/dL/min)? The answer is
96.9% of the time.
2.
When the Biosensor rate of change is rapidly falling (< -2 mg/dL/ min), how
often is reference glucose also falling (< 0 mg/dL/ min)? The answer is
92.9% of the time.
3.
When the Biosensor rate of change is stable (≥ -1 mg/dL/min and ≤ 1
mg/dL/ min), how often is reference glucose changing rapidly (> 2
mg/dL/min or < -2 mg/dL/ min)? The answer is only 0.8% of the time.
Table 3. Trend accuracy rate of change (adults; n=130)
Biosensor rate range
(mg/dL/min)
YSI rate range (mg/dL/min)
Biosensor-YSI
pairs (n)
<-2 [-2,-1) [-1,0) [0,1] (1,2] >2
<-2 31.5% 39.0% 22.4% 5.5% 0.8% 0.8% 254
[-2,-1) 7.0% 45.0% 41.8% 5.6% 0.5% 0.1% 1,373
[-1,0) 0.4% 6.6% 73.2% 18.6% 1.1% 0.1% 8,970
[0,1] 0.2% 1.1% 24.2% 64.0% 9.5% 1.0% 6,859
(1,2] 0.1% 0.5% 4.9% 31.8% 48.3% 14.4% 1,703
>2 0.0% 0.4% 2.7% 11.6% 31.1% 54.2% 673
1
Biosensor readings are within 40-400 mg/dL, inclusive.