Table 3.
Difference and Continuous Glucose Error Grid Analysis.
| CG-EGA |
|||||
|---|---|---|---|---|---|
| Glucose range | Capillary BG | Venous YSI | Accurate | Benign | Erroneous |
| ≤3.9 mmol/L | 94.0% | 0% | 6.0% | ||
| MAD (mmol/L) | 0.8 | 0.4 | |||
| n | 101 | 69 | 63 | 0 | 4 |
| 4.0 to 10.0 mmol/L | 98.3% | 1.5% | 0.1% | ||
| MARD (%) | 10.0 | 11.5 | |||
| n | 3060 | 2765 | 2661 | 41 | 4 |
| > 10.0 mmol/L | 94.5% | 3.1% | 2.4% | ||
| MARD (%) | 9.5 | 10.1 | |||
| n | 3535 | 4135 | 3738 | 123 | 93 |
| Overall | 96.1% | 2.4% | 1.5% | ||
| MARD (%) | 10.0 | 10.7 | |||
| n | 6696 | 6969 | 6462 | 164 | 101 |
CG-EGA, continuous glucose error grid analysis; MAD, mean absolute difference; MARD, mean absolute relative difference. In this study venous YSI during the in-clinic periods and number of comparisons are reduced due to needing sequential YSI readings spaced by 15 minutes.