Association of Continuous Glucose Monitoring–Derived Glycemia Risk Index With Cardiovascular Autonomic Neuropathy in Patients With Type 1 Diabetes Mellitus: A Cross-sectional Study

J Diabetes Sci TechnolPublished Cross-sectional study

Authors' conclusion

The GRI is significantly associated with CAN in patients with type 1 diabetes and may be a better CGM metric than TIR for predicting CAN.

Study context

Population
Patients with T1D who underwent autonomic function tests; Cardiovascular autonomic neuropathy (CAN) defined as ≥2 abnormal parasympathetic tests by age-specific reference
Participants
165 patients
Exposure
Glycemia risk index (GRI) vs conventional continuous glucose monitoring (CGM) metrics for association with CAN
Outcome
Association between GRI and CAN
Methodological detailsretrospective analysis of 3-month CGM data
  • Retrospective analysis of 3-month CGM data

Main finding

As reported in the abstract

Association of GRI with CAN

OR of CAN per 1-SD increase in GRI, multivariate logistic regression adjusted for covariates incl. HbA1c

9.05

95% CI 2.21–36.96P = .002

Observational data: associations, not effects.

Further findings

Prevalence of CAN

Overall prevalence of CAN
17.1%

Other CGM metrics and CAN

Time in range (TIR) and coefficient of variation (CV) also significantly associated with CAN in the multivariate model

AUC for prediction of CAN

AUC of GRI
0.85 (95% CI 0.76-0.94)
AUC of TIR (95% CI 0.71-0.89); GRI superior, P for comparison = .046
0.80
AUC of CV (95% CI 0.57-0.84); GRI superior, P for comparison = .049
0.71

Original publication

Association of Continuous Glucose Monitoring–Derived Glycemia Risk Index With Cardiovascular Autonomic Neuropathy in Patients With Type 1 Diabetes Mellitus: A Cross-sectional Study. J Diabetes Sci Technol. Published 14 October 2024. doi:10.1177/19322968241288579

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