4.7 Article

Performance of intermittently scanned continuous glucose monitoring systems in people with type 1 diabetes: A pooled analysis

期刊

DIABETES OBESITY & METABOLISM
卷 24, 期 3, 页码 522-529

出版社

WILEY
DOI: 10.1111/dom.14609

关键词

continuous glucose monitoring (CGM); type 1 diabetes

资金

  1. Projekt DEAL

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The pooled analysis showed that isCGM performed well in children, adolescents, and adults with type 1 diabetes, exhibiting higher accuracy compared to reference blood glucose measurements. However, the rate of change in glucose levels, both increasing and decreasing, decreased the performance of isCGM.
Aims To conduct a pooled analysis to assess the performance of intermittently scanned continuous glucose monitoring (isCGM) in association with the rate of change in sensor glucose in a cohort of children, adolescents, and adults with type 1 diabetes. Material and Methods In this pooled analysis, isCGM system accuracy was assessed depending on the rate of change in sensor glucose. Clinical studies that have been investigating isCGM accuracy against blood glucose, accompanied with collection time points were included in this analysis. isCGM performance was assessed by means of median absolute relative difference (MedARD), Parkes error grid (PEG) and Bland-Altman plot analyses. Results Twelve studies comprising 311 participants were included, with a total of 15 837 paired measurements. The overall MedARD (interquartile range) was 12.7% (5.9-23.5) and MedARD differed significantly based on the rate of change in glucose (P < 0.001). An absolute difference of -22 mg/dL (-1.2 mmol/L) (95% limits of agreement [LoA] 60 mg/dL (3.3 mmol/L), -103 mg/dL (-5.7 mmol/L)) was found when glucose was rapidly increasing (isCGM glucose minus reference blood glucose), while a -32 mg/dL (1.8 mmol/L) (95% LoA 116 mg/dL (6.4 mmol/L), -51 mg/dL (-2.8 mmol/L)) absolute difference was observed in periods of rapidly decreasing glucose. Conclusions The performance of isCGM was good when compared to reference blood glucose measurements. The rate of change in glucose for both increasing and decreasing glucose levels diminished isCGM performance, showing lower accuracy during high rates of glucose change.

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