Cited by 57Diabetes Management and ResearchDiabetes Management and EducationDiabetes Treatment and Management

Machine-Learning Based Model to Improve Insulin Bolus Calculation in Type 1 Diabetes Therapy

Noaro, Giulia, Cappon, Giacomo, Vettoretti, Martina, Sparacino, Giovanni, Favero, Simone Del, Facchinetti, Andrea·2021·IEEE Transactions on Biomedical Engineering

Abstract

Objective: This paper aims at proposing a new machine-learning based model to improve the calculation of mealtime insulin boluses (MIB) in type 1 diabetes (T1D) therapy using continuous glucose monitoring (CGM) data. Indeed, MIB is still often computed through the standard formula (SF), which does not account for glucose rate-of-change (ΔG), causing critical hypo/hyperglycemic episodes. Methods: Four candidate models for MIB calculation, based on multiple linear regression (MLR) and least absolute shrinkage and selection operator (LASSO) are developed. The proposed models are assessed in silico, using the UVa/Padova T1D simulator, in different mealtime scenarios and compared to the SF and three ΔG-accounting variants proposed in the literature. An assessment on real data, by retrospectively analyzing 218 glycemic traces, is also performed. Results: All four tested models performed better than the existing techniques. LASSO regression with extended feature-set including quadratic terms (LASSOQ) produced the best results. In silico, LASSOQ reduced the error in estimating the optimal bolus to only 0.86 U (1.45 U of SF and 1.36-1.44 U of literature methods), as well as hypoglycemia incidence (from 44.41% of SF and 44.60-45.01% of literature methods, to 35.93%). Results are confirmed by the retrospective application to real data. Conclusion: New models to improve MIB calculation accounting for CGM-ΔG and easy-to-measure features can be developed within a machine learning framework. Particularly, in this paper, a new LASSOQ model was developed, which ensures better glycemic control than SF and other literature methods. Significance: MIB dosage with the proposed LASSOQ model can potentially reduce the risk of adverse events in T1D therapy.

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Crossref · 10.1109/tbme.2020.3004031

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Authors
Noaro, G., Cappon, G., Vettoretti, M., Sparacino, G., Favero, S. D., & Facchinetti, A.
Affiliations
University of Padua (IT)
Venue
IEEE Transactions on Biomedical Engineering
Published
2021-01
Volume
68
Issue
1
Pages
247-255
ISSN
  • 0018-9294 (ISSN-L)
  • 1558-2531
OpenAlex
W3036368325
Cited by
57
References
40
Citations by year
2026: 6 · 2025: 9 · 2024: 10 · 2023: 12 · 2022: 8 · 2021: 11 · 2020: 1
FWCI
6.03
Type
journal article
Language
en
Open access
closed
Locations
  • IEEE Transactions on Biomedical Engineering (publishedVersion)
  • PubMed (publishedVersion)
  • Padua Research Archive (University of Padova) (submittedVersion)
Funders
  • Italian Minister for Education
  • Dipartimenti di Eccellenza (232/2016)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Education
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
Keywords
type 1 diabetes, continuous glucose monitoring, LASSO, multiple linear regression, hypoglycemia, glycemic control, insulin dose
MeSH terms
Machine Learning, Blood Glucose, Diabetes Mellitus, Type 1, Humans, Hypoglycemic Agents, Insulin, Insulin Infusion Systems, Retrospective Studies, Blood Glucose Self-Monitoring

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