Table 2.
Difference Analysis Compared with Capillary and Venous Reference Under Various Conditions
| Days 1–14 | Days 2–14 | Without hypoglycemia/rapid changea | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Reference, glucose range, parameter | All | Home | Clinic | All | Home | Clinic | Day (7 a.m.–11 p.m.) | Night (11 p.m.–7 a.m.) | All | Clinic |
| Capillary, BG | ||||||||||
| <100 mg/dL | ||||||||||
| MAD (mg/dL) | 11.3 | 11.3 | 11.8 | 11.0 | 11.0 | 10.6 | 11.5 | 10.4 | 10.3 | 8.4 |
| n | 2,153 | 1,946 | 207 | 1,985 | 1,813 | 172 | 1,787 | 366 | 905 | 97 |
| ≥100 mg/dL | ||||||||||
| MARD (%) | 10.7 | 10.5 | 11.8 | 10.2 | 10.2 | 10.4 | 10.8 | 9.9 | 10.2 | 11.1 |
| n | 11,042 | 9,642 | 1,400 | 9,987 | 8,878 | 1,109 | 9,717 | 1,325 | 9,341 | 1,236 |
| All | ||||||||||
| % | 11.4 | 11.3 | 12.1 | 11.0 | 11.0 | 10.7 | 11.5 | 10.8 | 10.4 | 11.0 |
| n | 13,195 | 11,588 | 1,607 | 11,972 | 1,0691 | 1,281 | 11,504 | 1,691 | 10,246 | 1,333 |
| Venous, YSI | ||||||||||
| <100 mg/dL | ||||||||||
| MAD (mg/dL) | — | — | 13.4 | — | — | 12.6 | — | — | — | 10.2 |
| n | — | — | 1,475 | — | — | 1,327 | — | — | — | 620 |
| ≥100 mg/dL | ||||||||||
| MARD (%) | — | — | 11.4 | — | — | 10.3 | — | — | — | 10.9 |
| n | — | — | 10,697 | — | — | 8,789 | — | — | — | 9,722 |
| All | ||||||||||
| % | — | — | 12.0 | — | — | 11.0 | — | — | — | 11.0 |
| n | — | — | 12,172 | — | — | 10,116 | — | — | — | 1,0342 |
a
Excluding rapidly changing/hypoglycemia (80 mg/dL) and impending hypoglycemia.
BG, blood glucose; MAD, mean absolute difference, MARD, mean absolute relative difference.