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Timing of Initiation of Continuous Glucose Monitoring in Established Pediatric Diabetes (The CGM TIME Trial)

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified December 2014 by Children's Hospital of Eastern Ontario.
Recruitment status was:  Active, not recruiting
JDRF Canadian Clinical Trial Network
Information provided by (Responsible Party):
Margaret Lawson, Children's Hospital of Eastern Ontario Identifier:
First received: February 14, 2011
Last updated: December 5, 2014
Last verified: December 2014
The investigators hypothesize that REAL-Time Continuous Glucose Monitoring (RT-CGM) will be more effective if introduced in children and adolescents with established diabetes at the same time as they are starting pump therapy. This randomized controlled trial will compare the effectiveness of simultaneous vs delayed introduction of RT-CGM in children and adolescents with type 1 diabetes who are starting insulin pump therapy.

Condition Intervention Phase
Type 1 Diabetes
Device: Simultaneous RT-CGM and Pump Initiation
Device: Delayed Initiation of RT-CGM
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Simultaneous vs Delayed Initiation of REAL-Time Continuous Glucose Monitoring in Children and Adolescents With Type 1 Diabetes Starting Insulin Pump Therapy

Resource links provided by NLM:

Further study details as provided by Children's Hospital of Eastern Ontario:

Primary Outcome Measures:
  • Adherence to CGM (hours per week) [ Time Frame: one year ]
    Number of hours of RT-CGM use per week

Secondary Outcome Measures:
  • A1C [ Time Frame: one year ]
    Hemoglobin A1C

  • Readiness for change [ Time Frame: six months ]
    SOCRATES - Diabetes Version

  • Treatment Satisfaction and Quality of Life [ Time Frame: one year ]
    Insulin Delivery Systems Rating Questionnaire (IDSRQ)

  • Fear of Hypoglycemia [ Time Frame: one year ]
    Hypoglycemia Fear Scale (HFS-98)

  • Barriers to Adherence [ Time Frame: one year ]
    Modified Barriers to Adherence Questionnaire (MBAQ)

  • Perception of Barriers/Facilitators to RT-CGM Use [ Time Frame: one year ]
    CGM Satisfaction Scale (CGM-SAT)

Enrollment: 144
Study Start Date: June 2011
Estimated Study Completion Date: January 2015
Primary Completion Date: July 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Simultaneous RT-CGM and Pump Initiation
The experimental group will initiate RT-CGM at the same time as they begin insulin pump therapy.
Device: Simultaneous RT-CGM and Pump Initiation
Subjects in this group will start using RT-CGM at the same time as they initiate insulin pump therapy.
Other Name: Sensor-Augmented Pump Therapy at Pump Initiation
Active Comparator: Delayed RT-CGM Initiation
The control group will use standard pump therapy until the 6 month study visit at which time RT-CGM will be initiated.
Device: Delayed Initiation of RT-CGM
Subjects in this group will start using RT-CGM 6 months after initiation of insulin pump therapy.

Detailed Description:
REAL-Time Continuous Glucose Monitoring (RT-CGM) improves diabetes control in adults with type 1 diabetes. However, studies of RT-CGM in children and adolescents have been mostly negative. The lack of effectiveness in the pediatric population appears directly related to adherence to RT-CGM, i.e., the willingness of children and teens to wear and use this technology. Most previous RT-CGM studies have focused on experienced pump users or children with new-onset diabetes. At the time of pump initiation, children and adolescents who have been living with diabetes (and their parents) are highly motivated to make changes in their diabetes management and to take on additional responsibilities to improve their diabetes control and lifestyle, the two primary reasons for initiating pump therapy in the pediatric population. The investigators hypothesize that readiness for making changes in diabetes management will be greater at the time of pump initiation than at six months after the pump start. Further, the investigators hypothesize that readiness for change at the time of RT-CGM initiation will predict future adherence to RT-CGM and its effectiveness.

Ages Eligible for Study:   5 Years to 18 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion criteria:

  • Males and females age 5-18 years old.
  • Established T1D diagnosis for a minimum of one year.
  • Naïve to CSII therapy and ready to start CSII with the Veo pump (Medtronic) .
  • Willing to use RT-CGM and to be randomly assigned to either simultaneous or delayed RT-CGM initiation.
  • Regular diabetes follow up at one of the 5 participating sites.
  • Internet access at home (to upload RT-CGM data).
  • Parent(s) or legally acceptable representative able to speak and read English or French.
  • Ability of the subject and parent(s) or legally acceptable representative to participate in all aspects of this clinical trial.
  • Written informed consent must be obtained and documented, with assent of the child if <14 years of age.

Exclusion Criteria

  • Conditions which in the opinion of the investigator may interfere with the subject's ability to participate in the study.
  • Has received oral and/or intravenous steroid therapy (for any indication, at any dose and/or for any duration) on more than 2 separate occasions in the past 12 months. Use of inhaled and/or topical steroid therapy in the last 12 months does not exclude the subject.
  • Prior use of RT-CGM for more than 50% of the time over the past 6 months.
  • Prior enrollment in the current study.
  • Current enrollment in another intervention trial.
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Please refer to this study by its identifier: NCT01295788

Canada, Ontario
McMaster Children's Hospital
Hamilton, Ontario, Canada, L8S 4J9
Children's Hospital of Western Ontario
London, Ontario, Canada, N5Y 3T2
Markham-Stouffville Hospital
Markham, Ontario, Canada, L3P 7P3
Children's Hospital of Eastern Ontario
Ottawa, Ontario, Canada, K1H 8L1
Hospital for Sick Children
Toronto, Ontario, Canada, M5G 1X8
Sponsors and Collaborators
Children's Hospital of Eastern Ontario
JDRF Canadian Clinical Trial Network
Study Director: Margaret L Lawson, MD Children's Hospital of Eastern Ontario
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Margaret Lawson, Professor of Pediatrics, Children's Hospital of Eastern Ontario Identifier: NCT01295788     History of Changes
Other Study ID Numbers: CHEO 09/05E
Study First Received: February 14, 2011
Last Updated: December 5, 2014

Additional relevant MeSH terms:
Diabetes Mellitus
Diabetes Mellitus, Type 1
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Autoimmune Diseases
Immune System Diseases
Insulin, Globin Zinc
Hypoglycemic Agents
Physiological Effects of Drugs processed this record on May 25, 2017