. 2012 Sep 1;6(5):1207–1215. doi: 10.1177/193229681200600526

Table 2.

Correlation between Measures of Blood Glycemic Variability^a

	Mean	SD	HbA1c	MAGE	CV	Hyper₁₈₀	Hyper₁₅₀	Hypo₆₀	Hypo₇₂	IQR
Mean	—

SD	0.56	—

HbA1c	0.39	0.46	—

MAGE	–0.39	–0.87	–0.40	—

CV	NS	0.90	0.34	0.45	—

Hyper₁₈₀	0.82	0.82	0.42	0.47	0.40	—

Hyper₁₅₀	0.89	0.59	0.34	0.43	0.31	0.89	—

Hypo₆₀	NS	NS	NS	NS	0.43	NS	NS	—

Hypo₇₂	–0.46	NS	NS	NS	0.44	NS	NS	0.66	—

IQR	0.57	0.91	0.43	0.52	0.78	0.68	0.61	NS	NS	—

SD, standard deviation; CV, coefficient of variation; IQR, interquartile range.

Pearson’s linear correlation coefficient among common measures of GV^26,38 and HbA1c. Glycemic variability measures were calculated from 86 patients (24 h of CGM, sampling each 5 min). Mean amplitude of glycemic excursions was calculated as average of positive adjacent peak greater than 1 SD. Coefficient of variation was calculated as SD/mean. Hyper_X and Hypo_X were calculated as fractions of the total time above/below a given threshold, e.g., Hyper₁₅₀ was time (in percent) spent above 150 mg/dl. Interquartile range (IQR) is the difference between 75th and 25th percentiles from distribution of blood glucose values. Unpublished data.