Background: The T1D Exchange Quality Improvement Collaborative (T1Dx-QI) is a learning network of over forty US type 1 diabetes clinics. Clinics share best-practice ideas for quality improvement and use data for population health research. This study benchmarks continuous glucose monitor (CGM) use across pediatric clinics in the T1Dx-QI.

Method: T1Dx-QI clinics report monthly on critical metrics, including the percentage of patients with hemoglobin A1c (HbA1c) <7% or using CGM. Median values for each site were calculated using Lahey P run charts between July 2020 and June 2021. These results are shared non-anonymized internally among participating T1Dx-QI clinics.

Results: Across 17 T1Dx-QI clinics, the percentage of patients using CGM ranged from 23% to 85% (Figure 1; mean and median CGM use were 61.3% and 61.7%, respectively) . Median HbA1c values ranged from 7.4% to 9.2%. There were no observed differences in CGM use by patient population size.

Conclusion: The T1Dx-QI benchmarks key clinical metrics to support quality improvement, share best practices, and promote learning across clinics.


A. Garrity: None. A. Mungmode: None. K. Cossen: None. M. Gallagher: None. A.J. Feuer: None. D. Brimberry: None. P. Prahalad: None. M.L. Scott: None. O. Ebekozien: None. D. Eng: None.


The Leona M. and Harry B. Helmsley Charitable Trust

Readers may use this article as long as the work is properly cited, the use is educational and not for profit, and the work is not altered. More information is available at