Table 3.
Correlations of variability measures with subsequent extreme glycemic events
| Metric of average glycemia and GV computed from SMBG during month 1 of study | Correlation of metric with the number of extreme BG episodes observed during months 2–4 of study* |
|
|---|---|---|
| BG <40 mg/dL | BG >400 mg/dL | |
| HBA1c (baseline laboratory measurement) |
−0.04 |
0.58 |
| Mean BG |
−0.15 |
0.58 |
| SD of BG |
0.15 |
0.58 |
| M-value |
0.16 |
0.68 |
| MAGE |
0.17 |
0.56 |
| LBGI |
0.59 |
−0.06 |
| HBGI |
−0.05 |
0.65 |
| ADRR | 0.44 | 0.45 |
*At this sample size, correlations above 0.4 were considered significant at P = 0.001, which was an appropriate significance level accounting for the multicollinearity of the considered measures (39).