Accuracy of Continuous Glucose Monitoring in Adults with Type 1 Diabetes Admitted to Hospital: A Real-World Multicenter Observational Study
Authors' conclusion
In this real-world multicenter study, CGM glucose agreed well with reference blood glucose, suggesting modern CGM devices could be safely and effectively used in hospitalized adults with T1D.
Study context
- Population
- Adults with T1D requiring multiday admissions during 2020–2023 across three health services in Australia; dialysis and pediatric/obstetric/palliative care/psychiatry admissions excluded
- Participants
- 146 adults214 admissions
- Exposure
- Continuous glucose monitoring (CGM) interstitial glucose vs reference blood glucose
- Outcome
- CGM accuracy vs time-matched (±5 min) reference glucose: median ARD, MARD and consensus error grid analysis
Methodological detailsmulticenter, real-world
- Multicenter
- Real-world
Main finding
As reported in the abstract
CGM accuracy, all 2,199 CGM-reference pairs
- Overall absolute relative difference (ARD), mean (SD)
- 12.8% (13.1)
- Overall ARD, median (IQR)
- 9.4% (3.7-17.7)
- Glucose pairs within consensus error grid (CEG) zones A/B
- 99.3%
Observational data: associations, not effects.
Further findings
Mean ARD (MARD)
| Outcome | Critical care | Noncritical care | P value |
|---|---|---|---|
| MARD in critical care vs noncritical care wardsAccuracy lower in critical care | 16.1% | 12.0% | P < 0.001 |
Original publication
Accuracy of Continuous Glucose Monitoring in Adults with Type 1 Diabetes Admitted to Hospital: A Real-World Multicenter Observational Study. Diabetes Technol Ther. Published 13 January 2025. doi:10.
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