Effect of Continuous Glucose Monitoring on Glycemic Control, Acute Admissions and Quality of Life: A Real-World Study

Sara Charleer, Chantal Mathieu, Frank Nobels, Christophe De Block, Regis P Radermecker, Michel P Hermans, Youri Taes, Chris Vercammen, Guy T'Sjoen, Laurent Crenier, Steffen Fieuws, Bart Keymeulen, Pieter Gillard, RESCUE trial investigators

Research output: Contribution to journalArticlepeer-review

121 Citations (Scopus)


Context: Randomized controlled trials evaluating real-time continuous glucose monitoring (RT-CGM) patients with type 1 diabetes (T1D) show improved glycemic control, but limited data are available on real-world use.

Objective: To assess impact of RT-CGM in real-world settings on glycemic control, hospital admissions, work absenteeism, and quality of life (QOL).

Design: Prospective, observational, multicenter, cohort study.

Participants: A total of 515 adults with T1D on continuous subcutaneous insulin infusion (CSII) therapy starting in the Belgian RT-CGM reimbursement program.

Intervention: Initiation of RT-CGM reimbursement.

Main Outcome Measure: Hemoglobin A1c (HbA1c) evolution from baseline to 12 months.

Results: Between September 1, 2014, and December 31, 2016, 515 adults entered the reimbursement system. Over this period, 417 (81%) patients used RT-CGM for at least 12 months. Baseline HbA1c was 7.7 ± 0.9% (61 ± 9.8 mmol/mol) and decreased to 7.4 ± 0.8% (57 ± 8.7 mmol/mol) at 12 months (P < 0.0001). Subjects who started RT-CGM because of insufficient glycemic control showed stronger decrease in HbA1c at 4, 8, and 12 months compared with patients who started because of hypoglycemia or pregnancy. In the year preceding reimbursement, 16% of patients were hospitalized for severe hypoglycemia or ketoacidosis in contrast to 4% (P < 0.0005) the following year, with decrease in admission days from 54 to 18 per 100 patient years (P < 0.0005). In the same period, work absenteeism decreased and QOL improved significantly, with strong decline in fear of hypoglycemia.

Conclusion: Sensor-augmented pump therapy in patients with T1D followed in specialized centers improves HbA1c, fear of hypoglycemia, and QOL, whereas work absenteeism and admissions for acute diabetes complications decreased.

Original languageEnglish
Pages (from-to)1224-1232
Number of pages9
JournalJournal of Clinical Endocrinology and Metabolism
Issue number3
Early online date12 Jan 2018
Publication statusPublished - 1 Mar 2018


  • Adult
  • Blood Glucose Self-Monitoring/methods
  • Blood Glucose/analysis
  • Diabetes Mellitus, Type 1/blood
  • Female
  • Glycated Hemoglobin A/analysis
  • Hospitalization/statistics & numerical data
  • Humans
  • Hypoglycemia/etiology
  • Male
  • Middle Aged
  • Prospective Studies
  • Quality of Life


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