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Table 3 Accuracy and bias (with limits of agreement) of glycemic variability indices obtained from the OptiScanner® and the reference blood gas analyzer

From: Manual versus Automated moNitoring Accuracy of GlucosE II (MANAGE II)

   J-index (mg/dl)2 SD (mg/dl) MGC (mg/dl) MAGE (mg/dl) GVI (mg/dl) per hour GLI (mg/dl) per hour
Accuracy Correlation (r)a 0.96 0.94 0.85 0.72 0.52 0.43
  Lower limit −16.16 −15.35 −45.13 −53.30 −0.95 −967.54
Bias Mean difference −1.42 −1.81 −1.01 −3.78 16.54 24.52
  Upper limit 13.32 11.73 43.10 45.73 34.04 1016.59
  1. aAll values are statistically significant
  2. SD standard deviation, MGC maximal glucose change, MAGE mean amplitude of glycemic excursions, GVI glucose variability index, GLI glucose lability index