Table 1.
Assessment of intermittently scanned continuous glucose monitoring (isCGM) performance by means of median absolute relative difference (MARD) and median absolute difference (MAD). RCPG = rate of change in plasma glucose; n = number of points of comparison; OGTT = oral glucose tolerance test. Values are given as median (interquartile range).
| MARD (%) |
MAD (mg/dL) |
MAD (mmol/L) |
n | |
|---|---|---|---|---|
| Overall | 8.3 [4.0–14.8] | 18 [9–32] | 1.0 [0.5–1.8] | 242 |
| Pre-OGTT value | 6.9 [3.2–10.8] | 8 [5–9] | 0.4 [0.3–0.9] | 34 |
| Hypoglycemia Level 1 (<70 mg/dL [<3.9 mmol/L]) |
18.8 [15.8–22.0] | 17 [13–20] | 0.9 [0.7–1.1] | 6 |
| Euglycemia (70–180 mg/dL [3.9–10.0 mmol/L]) |
9.5 [4.3–15.1] | 13 [6–22] | 0.7 [0.3–1.2] | 76 |
| Hyperglycemia level 1 (180–250 mg/dL [10.0–13.9 mmol/L]) |
9.4 [4.0–17.2] | 20 [8–39] | 1.1 [0.4–2.2] | 65 |
| Hyperglycemia level 2 (>250 mg/dL [>13.9 mmol/L]) |
7.1 [3.3–11.9] | 23 [10–36] | 1.3 [0.6–2.0] | 95 |
| Low RCPG (0–0.82 mg/dL/min) |
6.5 [3.5–10.8] | 18 [10–28] | 0.9 [0.6–1.5] | 51 |
| Moderate RCPG (0.83–1.33 mg/dL/min) |
8.4 [3.7–13.2] | 17 [9–31] | 0.9 [0.5–1.7] | 51 |
| High RCPG (1.34–2.33 mg/dL/min) |
8.7 [5.0–18.2] | 20 [9–36] | 1.1 [0.5–2.0] | 52 |
| Very high RCPG (>2.33 mg/dL/min) |
12.8 [5.1–21.1] | 25 [13–45] | 1.4 [0.7–2.5] | 54 |