Table 1.
Summary of CGM Metrics, Including Time in Various Glycemic Ranges, GMI, and CV (Also Categorized as Either Stable or Unstable), Based on Individual Sensor Experiments.
| CGM metric | G5 |
FL |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min. | 25th percentile | Median | 75th percentile | Max. | n | Min. | 25th percentile | Median | 75th percentile | Max. | n | |
| Mean CGM glucose (mg/dL) | 114.0 | 131.6 | 142.4 | 157.2 | 211.0 | 39 | 93.6 | 130.4 | 140.6 | 156.9 | 182.4 | 34 |
| SD of CGM glucose (mg/dL) | 32.8 | 47.7 | 55.8 | 64.7 | 76.2 | 39 | 38.6 | 48.5 | 56.9 | 64.3 | 76.6 | 34 |
| CV of CGM glucose | 27.2% | 35.7% | 37.9% | 41.2% | 43.8% | 39 | 29.2% | 35.5% | 39.1% | 42.1% | 53.7% | 34 |
| TbR<70 | 1.1% | 2.9% | 5.3% | 7.3% | 12.3% | 39 | 0.3% | 2.9% | 5.5% | 9.3% | 39.3% | 34 |
| TiR70-180 | 32.3% | 60.5% | 70.9% | 77.1% | 91.7% | 39 | 51.7% | 60.2% | 67.3% | 77.0% | 87.5% | 34 |
| TaR>180 | 3.4% | 15.3% | 22.1% | 31.8% | 65.5% | 39 | 5.8% | 15.1% | 22.4% | 32.1% | 47.7% | 34 |
| TbR<54 | 0.0% | 0.3% | 1.0% | 2.0% | 4.0% | 39 | 0.0% | 0.4% | 1.0% | 2.4% | 23.9% | 34 |
| TbR54-<70 | 0.9% | 2.5% | 4.0% | 5.1% | 8.4% | 39 | 0.3% | 2.6% | 5.0% | 6.5% | 15.4% | 34 |
| TaR>180-250 | 3.1% | 12.9% | 18.2% | 23.3% | 39.0% | 39 | 5.8% | 12.7% | 18.4% | 23.6% | 30.6% | 34 |
| TaR>250 | 0.1% | 2.1% | 4.7% | 9.0% | 28.9% | 39 | 0.0% | 1.9% | 4.5% | 8.6% | 18.4% | 34 |
| GMI | 6.04% | 6.46% | 6.72% | 7.07% | 8.36% | 39 | 5.55% | 6.43% | 6.67% | 7.06% | 7.67% | 34 |
| CV category | Stable: | 12 | Unstable: | 27 | Stable: | 10 | Unstable: | 24 | ||||
Abbreviations: CGM, continuous glucose monitoring; CV, coefficient of variation; FL, FreeStyle Libre; G5, Dexcom G5; GMI, glucose management indicator; SD, standard deviation; TaR, time above range; TbR, time below range; TiR, time in range.
TbR<70, time spent <70 mg/dL; TiR70-180, time spent between 70 and 180 mg/dL; TaR>180, time spent >180 mg/dL; TbR<54, time spent <54 mg/dL; TbR54-<70, time spent ≥54 and <70 mg/dL; TaR>180-250, time spent >180 and ≤250 mg/dL; and TaR>250, time spent >250 mg/dL.