Table 3.
Mean and 95% Confidence Intervals of Hourly BG, ARD, and RD, As Well As Percentage of Results Within ±15 mg/dL or ±15%, ±20 mg/dL or ±20%, and ±30 mg/dL or ±30% for FreeStyle Libre (FL) and Dexcom G5 (G5) Based on Days Without Induced Glucose Excursions.
| Hour of the day | Mean BG [95% CI] [mg/dL] | MARD G5 [95% CI] [%] | MARD FL [95% CI] [%] | MRD G5 [95% CI] [%] | MRD FL [95% CI] [%] | ±15 mg/dL/±15% G5 [%] | ±15 mg/dL/±15% FL [%] | ±20 mg/dL/±20% G5 [%] | ±20 mg/dL/±20% FL [%] | ±30 mg/dL/±30% G5 [%] | ±30 mg/dL/±30% FL [%] | n |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | 150.2 [138.2, 162.2] | 7.6 [6.1, 9.1] | 10.3 [8.2, 12.4] | 1.3 [−0.9, 3.6] | −7.7 [−10.3, −5.2] | 88.2 | 81.6 | 97.4 | 90.8 | 98.7 | 98.7 | 76 |
| 7 | 154.0 [143.6, 164.5] | 12.5 [10.7, 14.4] | 9.3 [7.9, 10.7] | −10.0 [−12.3, −7.7] | −7.6 [−9.3, −5.8] | 68.8 | 86.6 | 81.3 | 93.8 | 94.6 | 98.2 | 112 |
| 8 | 146.6 [137.9, 155.4] | 8.4 [6.9, 9.9] | 8.9 [7.4, 10.3] | 0.7 [−1.5, 3.0] | −4.8 [−6.9, −2.8] | 86.7 | 84.8 | 92.4 | 90.5 | 98.1 | 99.0 | 105 |
| 9 | 173.7 [163.5, 183.8] | 11.1 [9.4, 12.7] | 10.6 [8.8, 12.3] | −3.6 [−6.3, −1.0] | −5.3 [−7.8, −2.8] | 70.0 | 71.0 | 86.0 | 87.0 | 98.0 | 98.0 | 100 |
| 10 | 170.3 [156.5, 184.2] | 11.8 [9.9, 13.7] | 11.0 [8.9, 13.1] | 2.8 [−0.3, 5.9] | −1.3 [−4.5, 1.8] | 76.2 | 77.4 | 86.9 | 85.7 | 95.2 | 94.0 | 84 |
| 11 | 141.8 [129.8, 153.7] | 15.2 [10.9, 19.4] | 18.8 [10.3, 27.2] | 6.1 [0.9, 11.3] | 4.9 [−4.4, 14.3] | 68.7 | 65.1 | 83.1 | 74.7 | 90.4 | 90.4 | 83 |
| 12 | 134.9 [125.5, 144.3] | 10.6 [8.7, 12.5] | 9.7 [7.9, 11.5] | 0.8 [−2.2, 3.7] | −2.0 [−4.7, 0.7] | 75.9 | 80.5 | 89.7 | 88.5 | 97.7 | 97.7 | 87 |
| 13 | 131.1 [121.8, 140.4] | 10.9 [8.9, 12.9] | 12.2 [10.1, 14.2] | −1.5 [−4.4, 1.3] | −6.1 [−8.9, −3.3] | 80.2 | 73.9 | 85.6 | 84.7 | 94.6 | 93.7 | 111 |
| 14 | 171.2 [162.0, 180.4] | 13.7 [11.6, 15.7] | 13.6 [11.1, 16.0] | −5.7 [−8.8, −2.5] | −6.6 [−10.0, −3.3] | 62.5 | 69.2 | 76.9 | 79.8 | 94.2 | 87.5 | 104 |
| 15 | 147.2 [134.6, 159.9] | 17.5 [13.9, 21.0] | 13.7 [11.3, 16.2] | 9.7 [5.1, 14.3] | 2.6 [−1.1, 6.2] | 65.3 | 70.4 | 74.5 | 83.7 | 86.7 | 93.9 | 98 |
| 16 | 135.7 [125.7, 145.8] | 16.3 [13.9, 18.8] | 14.6 [12.0, 17.2] | 1.3 [−2.7, 5.3] | −2.8 [−6.6, 1.0] | 56.2 | 67.6 | 73.3 | 79.0 | 92.4 | 90.5 | 105 |
| 17 | 142.0 [133.3, 150.8] | 15.6 [13.2, 18.1] | 14.8 [12.1, 17.5] | −1.9 [−5.8, 1.9] | −4.7 [−8.6, −0.9] | 58.5 | 67.9 | 71.7 | 79.2 | 90.6 | 90.6 | 106 |
| 18 | 143.9 [134.1, 153.6] | 16.5 [13.1, 19.8] | 15.8 [12.8, 18.7] | 6.3 [1.8, 10.8] | 2.8 [−1.4, 7.0] | 61.8 | 59.8 | 74.5 | 74.5 | 87.3 | 92.2 | 102 |
| 19 | 145.5 [135.9, 155.1] | 11.2 [9.4, 13.1] | 9.2 [7.6, 10.9] | 0.4 [−2.4, 3.3] | −4.9 [−7.1, −2.6] | 78.1 | 83.8 | 86.7 | 92.4 | 93.3 | 98.1 | 105 |
| 20 | 152.1 [141.5, 162.7] | 11.2 [9.5, 12.9] | 11.5 [9.7, 13.2] | −2.9 [−5.6, −0.2] | −4.6 [−7.3, −2.0] | 72.6 | 76.4 | 90.6 | 84.9 | 99.1 | 96.2 | 106 |
| 21 | 153.1 [142.7, 163.6] | 10.1 [8.2, 12.0] | 11.8 [9.8, 13.7] | 1.0 [−1.7, 3.7] | −4.1 [−7.0, −1.2] | 80.0 | 75.2 | 89.5 | 82.9 | 95.2 | 95.2 | 105 |
| 22 | 167.1 [155.8, 178.3] | 9.8 [7.9, 11.7] | 12.1 [9.7, 14.5] | −1.2 [−3.9, 1.5] | −3.8 [−7.1, −0.4] | 77.7 | 74.5 | 92.6 | 81.9 | 96.8 | 93.6 | 94 |
Abbreviations: ARD, absolute relative differences; BG, blood glucose; CI, confidence interval, FL, FreeStyle Libre; MARD, mean absolute relative difference; MRD, mean relative difference RD, relative differences.