Continuous glucose monitoring in youth with type 1 diabetes: 12-month follow-up of the Juvenile Diabetes Research Foundation continuous glucose monitoring randomized trial

Diabetes Technol Ther. 2010 Jul;12(7):507-15. doi: 10.1089/dia.2010.0021.


Background: The use of continuous glucose monitoring (CGM) in the pediatric population is not well characterized. We have evaluated the use of CGM over a 12-month interval in youth with type 1 diabetes (TID) and have provided a description of CGM use.

Methods: Eighty subjects 8-17 years old with T1D and baseline hemoglobin A1c (HbA1c) >or=7.0% used CGM as part of a 6-month randomized trial and subsequent 6-month extension study. Outcomes included frequency of CGM use, HbA1c levels, rate of severe hypoglycemia, and a CGM satisfaction scale.

Results: Seventy-six (95%) of 80 subjects were using CGM after 6 months (median use = 5.5 days/week) compared with 67 (84%) after 12 months (median use = 4.0 days/week). The 17 subjects using CGM >or=6 days/week in month 12 had substantially greater improvement from baseline in HbA1c than did the 63 subjects using CGM <6 days/week in month 12 (mean change - 0.8 +/- 0.6% vs. +0.1 +/- 0.7%, P < 0.001). They also reported greater satisfaction with use of CGM (P = 0.001). The incidence of severe hypoglycemic events was low during the 12 months of the study irrespective of the amount of CGM use.

Conclusions: In youth with T1D, frequency of use decreases over time. Individuals who use CGM on a near-daily basis can have substantial improvement in glycemic control.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Blood Glucose / analysis
  • Blood Glucose / metabolism*
  • Child
  • Diabetes Mellitus, Type 1 / drug therapy
  • Diabetes Mellitus, Type 1 / metabolism*
  • Female
  • Glycated Hemoglobin / analysis
  • Glycated Hemoglobin / metabolism*
  • Humans
  • Longitudinal Studies
  • Male
  • Monitoring, Ambulatory / methods*
  • Patient Satisfaction
  • Statistics, Nonparametric
  • Surveys and Questionnaires


  • Blood Glucose
  • Glycated Hemoglobin A