Table 3.
Accuracy of CGM vs YSI Across CGM Glucose Ranges, Participants Aged 7 to 17 Years.
| Placement | CGM glucose range (mg/dL) | Matched pairs (n) | %15/15 (%) | %20/20 (%) | %30/30 (%) | MARD (%) | MAD (mg/dL) |
|---|---|---|---|---|---|---|---|
| Arm (N = 122) |
40-60 | 402 | 74.4 | 85.3 | 92.0 | NA | 11.3 |
| 61-80 | 1089 | 93.0 | 95.5 | 97.8 | NA | 6.4 | |
| 81-180 | 3386 | 86.5 | 94.1 | 98.7 | 8.4 | NA | |
| 181-300 | 2029 | 88.5 | 97.0 | 99.8 | 7.6 | NA | |
| 301-400 | 1162 | 96.9 | 99.4 | 100.0 | 5.4 | NA | |
| Abdomen (N = 118) |
40-60 | 439 | 56.0 | 73.1 | 86.8 | NA | 15.6 |
| 61-80 | 865 | 85.9 | 90.6 | 96.0 | NA | 9.0 | |
| 81-180 | 3046 | 84.1 | 91.2 | 97.8 | 9.2 | NA | |
| 181-300 | 1874 | 90.4 | 97.4 | 99.6 | 7.1 | NA | |
| 301-400 | 1145 | 95.4 | 99.6 | 100.0 | 5.7 | NA |
Abbreviations: CGM, continuous glucose monitoring; MARD, mean absolute relative difference; MAD, mean absolute difference.