Pediatric Inpatient Continuous Glucose Monitor Accuracy by Sensor Wear Day, Hospital Day, and Glucose Rate of Change
Authors' conclusion
In this pediatric hospital CGM accuracy study, MARD was within a favorable range of <14% overall and throughout sensor wear and hospitalization.
Study context
- Population
- Youth and young adults with diabetes hospitalized at two pediatric centers, aged 2–22 years (mean 12.4 ± 5.8 years, 58.8% female, 66.2% White, 8.8% Hispanic)
- Participants
- 68 participants544 POC-CGM pairs
- Comparison
- Dexcom G7 continuous glucose monitoring (CGM) vs reference point-of-care capillary glucose
- Outcome
- CGM accuracy: MARD and Parkes error grids
Methodological detailstwo pediatric centers, 80 hospital encounters
- Two pediatric centers
- 80 hospital encounters
Performance
As reported in the abstract
Overall CGM accuracy vs reference POC capillary glucose (MARD)
Overall mean absolute relative difference (MARD)
12.5%
Glucose pairs within low-risk Parkes error grid zones A and B, overall
99%
Further findings
MARD by sensor wear day
- Wear day 1
- 12.3%
- Wear days 2-6
- 13.6%
- Wear days 7-10 (best)
- 10.6%
- Wear day 1: pairs within Parkes zones A and B
- 99%
MARD by hospital day
- Hospital day 1
- 13.7%
- Hospital days 2-4
- 10.4%
- Hospital days 5-30
- 12.5%
MARD by CGM glucose rate of change
- Flat [−1 to 1 mg/(dL·min)] (best)
- 11.5%-11.9%
- Rapidly rising or falling [beyond −2 or 2 mg/(dL·min)]
- 16.6%-18.4%
Original publication
Pediatric Inpatient Continuous Glucose Monitor Accuracy by Sensor Wear Day, Hospital Day, and Glucose Rate of Change. Diabetes Technol Ther. Published 10 September 2026. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →