Diabetes technology

Statistically Adjusting for Wear Time in Randomized Trials of Continuous Glucose Monitors as a Complement to Intent-to-Treat and As-Treated Analyses: Application and Evaluation in Two Trials

Diabetes Technol TherPublished Secondary analysis of two randomised trials

Authors' conclusion

In trials of CGM use, the effect of variable wear time is non-negligible.

Study context

Population
Participants of two 6-month continuous glucose monitoring (CGM) trials spanning diverse ages (Wireless Innovation for Seniors with Diabetes Mellitus (WISDM) and CITY)2 trials
Comparison
Instrumental variable (IV)-based vs ITT estimates of CGM effect
Methodological detailsmethodological study, instrumental variable approach, treatment assignment as instrument
  • Methodological study
  • Instrumental variable approach
  • Treatment assignment as instrument

Primary result

As reported in the abstract

CGM wear time · 28-day window and full trial period
GroupValueFull trial period
WISDM93.1% (SD 20.4)94.5% (SD: 11.9)
CITY82.2% (SD 26.5)83.1% (SD: 21.5)

Value

WISDM93.1% (SD 20.4)
CITY82.2% (SD 26.5)

Full trial period

WISDM94.5% (SD: 11.9)
CITY83.1% (SD: 21.5)

Original publication

Statistically Adjusting for Wear Time in Randomized Trials of Continuous Glucose Monitors as a Complement to Intent-to-Treat and As-Treated Analyses: Application and Evaluation in Two Trials. Diabetes Technol Ther. Published 25 April 2023. doi:10.1089/dia.2023.0029

Composed by AI from the published abstract and checked against it. How Briefs are made →

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