Minimum Sampling Duration for Continuous Glucose Monitoring Metrics to Achieve Representative Glycemic Outcomes in Suboptimal Continuous Glucose Monitor Use
Authors' conclusion
We defined minimum sampling durations for all CGM metrics in suboptimal CGM use. CGM sampling of at least 14 days is required for >45% CGM use over 90 days to sufficiently reflect most of the CGM metrics. Assessment of hypoglycemia and coefficient of variation require a longer sampling period regardless of CGM use duration.
Study context
- Population
- Real-life continuous glucose monitoring (CGM) users with T1D, CGM use 45%-95% over 90 days
- Participants
- 336 users
- Outcome
- Minimum CGM sampling duration for each CGM metric to achieve representative glycemic outcomes (R2 of Spearman correlation vs all 90 days)
- Follow-up
- 90 days
Methodological detailsreal-life CGM data
- Real-life CGM data
Main finding
As reported in the abstract
Minimum sampling period by CGM metric (CGM use 45% to 95%)
- Mean glucose, TIR (70-180 mg/dL), time >180 mg/dL and time >250 mg/dL
- 14 days
- CV
- 28 days
- Time <54 mg/dL
- 35 days
- Time <70 mg/dL, 45-80% CGM use
- 28 days
- Time <70 mg/dL, >80% CGM use
- 21 days
Observational data: associations, not effects.
Original publication
Minimum Sampling Duration for Continuous Glucose Monitoring Metrics to Achieve Representative Glycemic Outcomes in Suboptimal Continuous Glucose Monitor Use. J Diabetes Sci Technol. Published 25 September 2023. doi:10.
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