Enhancing the Capabilities of Continuous Glucose Monitoring With a Predictive App

J Diabetes Sci TechnolPublished Diagnostic accuracy study

Authors' conclusion

The consistency of the performance of the three predictive models when evaluated on different cohorts of subjects with T1D and T2D on different insulin therapies, including real-world data, offers reassurance for real-world efficacy.

Study context

Population
Subjects with T1D on MDI, T2D on MDI and T1D on insulin pump therapy; Accu-Chek SmartGuide Predict continuous glucose monitoring (CGM) appthree data sets · Subjects with T1D on MDI 21 · T2D on MDI 59 · T1D on insulin pump therapy 226
Comparison
Two-hour glucose forecast vs 30-minute low glucose detection vs Nighttime low glucose prediction
Outcome
Predictive performance of the three models (aggregated data set)
Methodological detailsmachine learning models, three data sets, includes real-world data
  • Machine learning models
  • Three data sets
  • Includes real-world data

Performance

As reported in the abstract

Test or modelConsensus Error Grid zones A+B, 30 min horizonConsensus Error Grid zones A+B, 45 min horizonConsensus Error Grid zones A+B, 60 min horizonConsensus Error Grid zones A+B, 120 min horizonAccuracySensitivitySpecificityMean lead timeROC AUC
Two-hour glucose forecast99.8%99.3%98.7%96.3%
30-minute low glucose detection98.9%95.2%98.9%16.2 minutes0.958
Nighttime low glucose prediction86.5%55.3%91.6%0.859

Consensus Error Grid zones A+B, 30 min horizon

Two-hour glucose forecast99.8%
30-minute low glucose detection— not stated in the abstract
Nighttime low glucose prediction— not stated in the abstract

Consensus Error Grid zones A+B, 45 min horizon

Two-hour glucose forecast99.3%
30-minute low glucose detection— not stated in the abstract
Nighttime low glucose prediction— not stated in the abstract

Consensus Error Grid zones A+B, 60 min horizon

Two-hour glucose forecast98.7%
30-minute low glucose detection— not stated in the abstract
Nighttime low glucose prediction— not stated in the abstract

Consensus Error Grid zones A+B, 120 min horizon

Two-hour glucose forecast96.3%
30-minute low glucose detection— not stated in the abstract
Nighttime low glucose prediction— not stated in the abstract

Accuracy

Two-hour glucose forecast— not stated in the abstract
30-minute low glucose detection98.9%
Nighttime low glucose prediction86.5%

Sensitivity

Two-hour glucose forecast— not stated in the abstract
30-minute low glucose detection95.2%
Nighttime low glucose prediction55.3%

Specificity

Two-hour glucose forecast— not stated in the abstract
30-minute low glucose detection98.9%
Nighttime low glucose prediction91.6%

Mean lead time

Two-hour glucose forecast— not stated in the abstract
30-minute low glucose detection16.2 minutes
Nighttime low glucose prediction— not stated in the abstract

ROC AUC

Two-hour glucose forecast— not stated in the abstract
30-minute low glucose detection0.958
Nighttime low glucose prediction0.859

Original publication

Enhancing the Capabilities of Continuous Glucose Monitoring With a Predictive App. J Diabetes Sci Technol. Published 19 August 2024. doi:10.1177/19322968241267818

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