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Sustainable Use of a Real-Time Continuous Glucose Monitoring System from 2018 to 2020

  • John B. Welsh 1
  • Joost van der Linden 2
  • Tomas C. Walker 1
  • 1 - Dexcom Inc. - Global Clinical Initiatives - San Diego - California USA
  • 2 - Dexcom Inc. - Data Science - San Diego - California USA


We aimed to describe patterns of continuous glucose monitoring (CGM) system use and glycemic outcomes from 2018 to 2020 in a large real-world cohort by analyzing anonymized data from US-based CGM users who transitioned from the G5 to the G6 System (Dexcom) in 2018. The main end points were persistent use, within-day and between-day utilization, hypoglycemia, time in range (TIR, 70–180 mg/dL [3.9–10 mmol/L]), and use of the optional calibration feature in 2019 and 2020. In a cohort of 31,034 individuals, rates of persistent use were high, with 27,932 (90.0%) and 26,861 (86.6%) continuing to upload data in 2019 and 2020, respectively. Compared with G5 use, G6 use was associated with higher device utilization, less hypoglycemia, higher TIR (in 2020), and >80% fewer calibrations in both 2019 and 2020 (P's < 0.001). High persistence and utilization of the G6 system may contribute to sustainable glycemic outcomes and decreased user burden.



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