Table 3.
Absolute Relative Difference in CGM Glucose Levels Compared With That in POC Glucose Levels
| Patient Location | Patient-averaged ARD |
Aggregated ARD |
||||
|---|---|---|---|---|---|---|
| N | Mean ARD ± SD, % | Median ARD (IQR), % | No. pairs | Mean ARD ± SD, % | Median ARD (IQR), % | |
| All CGM-POC pairs | ||||||
| Medical + ICU | 20 | 10.1 ± 2.3 | 9.8 (8.3-11.4) | 812 | 10.4 ± 9.4 | 8.1 (3.4-14.7) |
| Medical | 20 | 10.0 ± 2.3 | 9.5 (8.3-10.8) | 596 | 10.2 ± 9.0 | 8.5 (3.7-14.3) |
| ICU | 6 | 12.5 ± 5.4 | 10.1 (8.6-15.5) | 216 | 10.9 ± 10.5 | 7.2 (2.9-16.8) |
| POC <70 mg/dL | ||||||
| Medical + ICU | 4 | 22.1 ± 10.0 | 20.8 (13.7-29.1) | 6 | 25.8 ± 15.9 | 22.0 (15.1-27.0) |
| Medical | 2 | 16.4 ± 3.7 | 16.4 (15.1-17.7) | 2 | 16.4 ± 3.7 | 16.4 (15.1-17.7) |
| ICU | 3 | 27.2 ± 13.6 | 27.7 (20.6-34.1) | 4 | 30.6 ± 18.1 | 26.4 (22.1-34.8) |
| POC 70-180 mg/dL | ||||||
| Medical + ICU | 19 | 10.9 ± 5.0 | 11.0 (8.1-14.1) | 380 | 11.4 ± 11.1 | 8.5 (3.4-15.7) |
| Medical | 19 | 10.7 ± 5.3 | 9.3 (7.9-13.9) | 245 | 11.6 ± 11.2 | 9.6 (4.1-15.3) |
| ICU | 6 | 13.3 ± 6.9 | 12.3 (9.2-16.8) | 135 | 11.2 ± 11.1 | 7.5 (2.5-17.6) |
| POC 181-250 mg/dL | ||||||
| Medical + ICU | 20 | 9.1 ± 1.8 | 9.3 (8.1-10.6) | 241 | 9.4 ± 7.4 | 8.3 (3.1-13.6) |
| Medical | 20 | 9.1 ± 2.1 | 9.4 (7.4-10.8) | 193 | 9.2 ± 7.1 | 8.6 (3.4-13.1) |
| ICU | 5 | 9.7 ± 5.9 | 8.7 (6.9-9.9) | 48 | 10.0 ± 8.8 | 7.0 (2.5-16.6) |
| POC >250 mg/dL | ||||||
| Medical + ICU | 19 | 8.9 ± 4.0 | 8.3 (7.1-10.2) | 185 | 9.1 ± 6.6 | 7.5 (3.7-14.0) |
| Medical | 19 | 9.1 ± 4.1 | 8.3 (7.3-10.2) | 156 | 9.2 ± 6.6 | 7.8 (3.5-14.3) |
| ICU | 5 | 5.9 ± 4.4 | 5.0 (3.7-9.1) | 29 | 8.4 ± 6.4 | 6.7 (3.8-12.2) |
Abbreviations: ARD = absolute relative difference; CGM = continuous glucose monitor; ICU = intensive care unit; POC = point of care.