• Aya Kitae, Tetsuya Kimura, Chihiro Munekawa, Yukako Hosomi, Takafumi Osaka, Noriyuki Kitagawa, Emi Ushigome, Masahiro Yamazaki, Masahide Hamaguchi, and Michiaki Fukui.
• Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
• Diabetes Obes Metab. 2021 Sep 1; 23 (9): 2155-2160.

AimWe aimed to develop an application to calculate mean amplitude of glycaemic excursions (MAGE) automatically and to evaluate its accuracy.Materials And MethodsWe named the application intermittently scanned continuous glucose monitoring (isCGM) calculator KAMOGAWA (Kyoto Auto MAGE Of Glucose cAlcutator With isCGM Application). The isCGM data from 20 patients, 10 with and 10 without diabetes, were used to compare manually calculated MAGE values with those calculated using KAMOGAWA. The rate of agreement for the MAGE values was calculated.ResultsComparing the MAGE values calculated manually with those calculated using KAMOGAWA, the total mean rate of agreement was 81.6%. Nonmatching values were checked and it was found that the inconsistencies were all attributable to errors in manual calculations. After correcting errors in the manual calculation, the MAGE values matched to one decimal place for all data in the manual and KAMOGAWA calculations.ConclusionsKAMOGAWA can help diabetologists use MAGE in clinical practice, which could contribute to improving glycaemic control in patients who use isCGM.© 2021 John Wiley & Sons Ltd.

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