Cited by 70Diabetes Management and ResearchDiabetes Management and EducationMobile Health and mHealth Applications

Clinical safety and feasibility of the advanced bolus calculator for type 1 diabetes based on case-based reasoning: A 6-week nonrandomized single-arm pilot study

Reddy, Monika, Pesl, Peter, Xenou, Maria, Toumazou, Christofer, Johnston, Desmond, Georgiou, Pantelis, Herrero, Pau, Oliver, Nick·2016·Diabetes Technology & Therapeutics

Abstract

BACKGROUND: The Advanced Bolus Calculator for Diabetes (ABC4D) is an insulin bolus dose decision support system based on case-based reasoning (CBR). The system is implemented in a smartphone application to provide personalized and adaptive insulin bolus advice for people with type 1 diabetes. We aimed to assess proof of concept, safety, and feasibility of ABC4D in a free-living environment over 6 weeks. METHODS: Prospective nonrandomized single-arm pilot study. Participants used the ABC4D smartphone application for 6 weeks in their home environment, attending the clinical research facility weekly for data upload, revision, and adaptation of the CBR case base. The primary outcome was postprandial hypoglycemia. RESULTS: Ten adults with type 1 diabetes, on multiple daily injections of insulin, mean (standard deviation) age 47 (17), diabetes duration 25 (16), and HbA1c 68 (16) mmol/mol (8.4 (1.5) %) participated. A total of 182 and 150 meals, in week 1 and week 6, respectively, were included in the analysis of postprandial outcomes. The median (interquartile range) number of postprandial hypoglycemia episodes within 6-h after the meal was 4.5 (2.0-8.2) in week 1 versus 2.0 (0.5-6.5) in week 6 (P = 0.1). No episodes of severe hypoglycemia occurred during the study. CONCLUSION: The ABC4D is safe for use as a decision support tool for insulin bolus dosing in self-management of type 1 diabetes. A trend suggesting a reduction in postprandial hypoglycemia was observed in the final week compared with week 1.

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Crossref · 10.1089/dia.2015.0413

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Authors
Reddy, M., Pesl, P., Xenou, M., Toumazou, C., Johnston, D., Georgiou, P., Herrero, P., & Oliver, N.
Affiliations
Imperial College London (GB)
Corresponding author
Reddy, Monika
Venue
Diabetes Technology & Therapeutics
Published
2016-08
Volume
18
Issue
8
Pages
487-493
ISSN
  • 1520-9156 (ISSN-L)
  • 1557-8593
OpenAlex
W2402082249
Cited by
70
References
28
Citations by year
2026: 2 · 2025: 7 · 2024: 7 · 2023: 11 · 2022: 3 · 2021: 5 · 2020: 15 · 2019: 8 · 2018: 9 · 2017: 3
FWCI
6.69
Type
journal article
Language
en
Open access
closed
Locations
  • Diabetes Technology & Therapeutics (publishedVersion)
  • PubMed (publishedVersion)
  • Spiral (Imperial College London) (submittedVersion)
Funders
  • National Institute for Health and Care Research (II-LA-0313-20004, II-LA-0214-20008)
  • Medical Research Council (MC_PC_12015)
  • Engineering and Physical Sciences Research Council (EP/N002474/1)
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 › Health Professions › General Health Professions › Mobile Health and mHealth Applications
Keywords
type 1 diabetes, case-based reasoning, decision support system, mobile application, postprandial hypoglycemia, multiple daily insulin injections, self-management, clinical safety, feasibility
MeSH terms
Smartphone, Adult, Blood Glucose, Diabetes Mellitus, Type 1, Female, Glycated Hemoglobin, Humans, Hypoglycemic Agents, Insulin, Male, Middle Aged, Pilot Projects, Prospective Studies, Self Care, Postprandial Period, Decision Support Systems, Clinical

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