Continuous Glucose Monitors for Children With Diabetes Mellitus

This study has been completed.
Information provided by:
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Identifier:
First received: September 29, 2003
Last updated: September 21, 2005
Last verified: September 2005

Good control of blood glucose levels is important in preventing complications from diabetes. This study assessed the accuracy and reliability of two FDA-approved continuous glucose monitors, the Continuous Glucose Monitoring System (CGMS) and the GlucoWatch G2 Biographer (GW2B), in children with type 1 diabetes mellitus (T1DM).

Condition Intervention Phase
Diabetes Mellitus, Insulin-Dependent
Device: The GlucoWatch® G2™ Biographer (GW2B)
Device: The Continuous Glucose Monitoring System (CGMS™)
Phase 4

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: DirecNet Inpatient Study to Test the Accuracy of Continuous Blood Glucose Monitoring Devices in Children With Type 1 Diabetes

Resource links provided by NLM:

Further study details as provided by Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD):

Primary Outcome Measures:
  • Accuracy of the GlucoWatch G2 Biographer and CGMS

Estimated Enrollment: 90
Study Start Date: May 2002
Estimated Study Completion Date: November 2002
Detailed Description:

Intensive control of blood glucose levels has been shown to substantially prevent or delay complications of T1DM in adolescents and adults. The major limitation to implementation of intensive glycemic control is hypoglycemia. Younger children may be at increased risk for hypoglycemia and the risk/benefit ratio of intensive glycemic control may be less favorable in this population. Intensive therapy has not been systematically evaluated in children less than 13 years of age. This study was conducted by the Diabetes Research in Children Network (DirecNet) to assess the accuracy of the CGMS and the GW2B glucose monitors in comparison with standard blood glucose measurements in an inpatient setting.

During 24-hour clinical research center stays at five clinical centers, approximately 90 children and adolescents with T1DM (1 to 17 years of age) wore two FDA-approved continuous glucose monitors, CGMS and GW2B, and had frequent serum glucose determinations during the day and night. To assess glucose monitor function during periods of rising and falling blood glucose, insulin-induced hypoglycemia and meal-induced hyperglycemia tests were also performed.


Ages Eligible for Study:   1 Year to 17 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria

  • Clinical diagnosis of type 1 diabetes mellitus for at least 1 year prior to study entry
  • For children over 2 years of age, body mass index between the 5th and 95th percentile for age and gender
  • Weight >= 12 kg (26.5 lbs) if < 7 years of age and >= 16 kg (35 lbs) if >7 years of age
  • Normal hematocrit

Exclusion Criteria

  • Current use of glucocorticoids
  • Skin or other medical disorders that would affect completion of the study
  • History of seizures other than those attributable to either hypoglycemia or high fever
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00069537

United States, California
Division of Pediatric Endocrinology and Diabetes, Stanford University
Stanford, California, United States, 94305-5208
United States, Colorado
Barbara Davis Center for Childhood Diabetes, University of Colorado
Denver, Colorado, United States, 80262
United States, Connecticut
Department of Pediatrics, Yale University School of Medicine
New Haven, Connecticut, United States, 06519
United States, Florida
Nemours Children’s Clinic
Jacksonville, Florida, United States, 32207
Jaeb Center for Health Research
Tampa, Florida, United States, 33647
United States, Iowa
Department of Pediatrics, University of Iowa Carver College of Medicine
Iowa City, Iowa, United States, 52242
Sponsors and Collaborators
Study Chair: William V. Tamborlane, MD Yale University
  More Information

Buckingham B, Beck R, Tamborlane W, Ruedy K, Boland E, Chase P, Wysocki T, Tsalikian E, Wilson D, Mauras N, Weinzimer D, Tansey M, Fiallo-Scharer R, Booth A, Kollman C, and the Diabetes Research In Children Network (DirecNet) Study Group. Diabetes Research in Children Network (DirecNet) Accuracy Study of the Continuous Glucose Monitoring System (CGMS) and GlucoWatch® G2™ Biographer (GWB) in Children with Type 1 Diabetes-A CRC-based Study. Diabetes 2003 Jun;52 Suppl 1:A36.
Wilson D, Buckingham B, Beck R, Ruedy K, Kollman C, Tsalikian E, Wysocki T, Weinzimer S, Chase P, and the Diabetes Research in Children Network (DirecNet) Study Group. A 5-center CRC-based Study of the Accuracy of the GlucoWatch®G2™ Biographer in Children and Adolescents with Type 1 Diabetes. Diabetes 2003 Jun;52 Suppl 1:A101.
Fiallo-Scharer R, Chase P, Beck R, Ruedy K, Booth A, Wysocki T, Boland E, Buckingham B, Tsalikian E, and the Diabetes Research In Children Network (DirecNet) Study Group. Performance of the One Touch Ultra at Different Glucose Levels in Three Age Groups of Children with T1DM in the CRC-DirecNet Accuracy Study. Diabetes 2003 Jun;52 Suppl 1:A562. Identifier: NCT00069537     History of Changes
Other Study ID Numbers: DirecNet 001, HD041890, HD041919-01, HD041908-01, HD041906-01, HD041918-01, HD041915
Study First Received: September 29, 2003
Last Updated: September 21, 2005
Health Authority: United States: Federal Government

Keywords provided by Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD):
Diabetes Mellitus, Insulin-Dependent
Type 1 Diabetes
Diabetes in Children
Continuous Glucose Monitoring Devices

Additional relevant MeSH terms:
Diabetes Mellitus
Diabetes Mellitus, Type 1
Autoimmune Diseases
Endocrine System Diseases
Glucose Metabolism Disorders
Immune System Diseases
Metabolic Diseases processed this record on May 26, 2015