Cited by 36Diabetes Management and ResearchDiabetes Treatment and ManagementDiabetes Management and Education

Continuous glucose monitoring with structured education in adults with type 2 diabetes managed by multiple daily insulin injections: a multicentre randomised controlled trial

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Kim, Ji Yoon, Jin, Sang-Man, Sim, Kang Hee, Kim, Bo-Yeon, Cho, Jae Hyoung, Moon, Jun Sung, Lim, Soo, Kang, Eun Seok +3 more·2024·Diabetologia

Abstract

Aims/hypothesis The aim of this study was to compare the effectiveness of stand-alone intermittently scanned continuous glucose monitoring (isCGM) with or without a structured education programme and blood glucose monitoring (BGM) in adults with type 2 diabetes on multiple daily insulin injections (MDI).Methods In this 24 week randomised open-label multicentre trial, adults with type 2 diabetes on intensive insulin therapy with HbA 1c levels of 58-108 mmol/mol (7.5-12.0%) were randomly assigned in a 1:1:1 ratio to isCGM with a structured education programme on adjusting insulin dose and timing according to graphical patterns in CGM (intervention group), isCGM with conventional education (control group 1) or BGM with conventional education (control group 2). Block randomisation was conducted by an independent statistician. Due to the nature of the intervention, blinding of participants and investigators was not possible. The primary outcome was change in HbA 1c from baseline at 24 weeks, assessed using ANCOVA with the baseline value as a covariate.Results A total of 159 individuals were randomised (n=53 for each group); 148 were included in the full analysis set, with 52 in the intervention group, 49 in control group 1 and 47 in control group 2. The mean (± SD) HbA 1c level at baseline was 68.19±10.94 mmol/mol (8.39±1.00%). The least squares mean change (± SEM) from baseline HbA 1c at 24 weeks was -10.96±1.35 mmol/mol (-1.00±0.12%) in the intervention group, -6.87±1.39 mmol/mol (-0.63±0.13%) in control group 1 (p=0.0367 vs intervention group) and -6.32±1.42 mmol/mol (-0.58±0.13%) in control group 2 (p=0.0193 vs intervention group). Adverse events occurred in 28.85% (15/52) of individuals in the intervention group, 26.42% (14/53) in control group 1 and 48.08% (25/52) in control group 2.Conclusions/interpretation Stand-alone isCGM offers a greater reduction in HbA 1c in adults with type 2 diabetes on MDI when education on the interpretation of graphical patterns in CGM is provided.Trial registration ClinicalTrials.gov NCT04926623.Funding This study was supported by Daewoong Pharmaceutical Co., Ltd.

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  • Previous studies examining the use of CGM in patients with T2D over a 6-month period, without midpoint CGM measurements, found only a modest reduction in HbA1c.

    “Similarly, previous studies examining the use of CGM in patients with T2D over a 6-month period, without midpoint CGM measurements, found only a modest reduction in HbA1c [10, 16].”

    From Sequential use of continuous glucose monitoring, with or without exercise trackers, significantly improves glycemic control in patients with type 2 diabetes (2025) · cites this paper as [16]

    The Study outcomes section describes a 24-week trial in adults with type 2 diabetes, and Table 2 reports HbA1c reductions at week 24. But the claim that it lacked midpoint CGM measurements is not supported: the Change in CGM metrics section reports measurements at week 12, and the Study design and participants section says CGM was used throughout the 24 weeks in both CGM groups. The structured-education group’s HbA1c reduction was 1.00 percentage point, so describing the study’s reductions collectively as only modest also obscures that result (page numbers unavailable). (LLM, conf=0.88)

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  • CGM with or without structured education is superior in reducing HbA1c in patients with T2D.

    “Furthermore, Kim et al. [16] demonstrated the superiority of CGM with or without structured education in reducing HbA1c in patients with T2D.”

    From Sequential use of continuous glucose monitoring, with or without exercise trackers, significantly improves glycemic control in patients with type 2 diabetes (2025) · cites this paper as [16]

    The Discussion reports that CGM with structured education was superior to both blood glucose monitoring and CGM with conventional education for reducing HbA1c. Table 2 shows HbA1c fell with conventional-education CGM, but its reduction was similar to that with blood glucose monitoring; the paper does not establish superiority without structured education. The trial was also limited to adults with type 2 diabetes using multiple daily insulin injections. Page numbers were not supplied. (LLM, conf=0.90)

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Authors
Kim, J. Y., Jin, S.-M., Sim, K. H., Kim, B.-Y., Cho, J. H., Moon, J. S., Lim, S., Kang, E. S., Park, C.-Y., Kim, S. G., & Kim, J. H.
Affiliations
  • Samsung Medical Center (KR)
  • The Catholic University of Korea Seoul St. Mary's Hospital (KR)
  • Yeungnam University College (KR)
  • Seoul National University (KR)
  • Yonsei University (KR)
  • Kangbuk Samsung Hospital (KR)
  • Korea University (KR)
Corresponding author
Kim, Jae Hyeon
Venue
Diabetologia
Published
2024-04-19
Volume
67
Issue
7
Pages
1223-1234
ISSN
  • 0012-186X (ISSN-L)
  • 1432-0428
OpenAlex
W4394962327
Cited by
36
References
36
Citations by year
2026: 15 · 2025: 19 · 2024: 2
FWCI
11.86
Type
journal article
Language
en
Open access
Locations
  • Diabetologia (publishedVersion)
  • PubMed (publishedVersion)
Funders
Daewoong Pharmaceutical Company
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Education
Keywords
continuous glucose monitoring, flash glucose monitoring, type 2 diabetes, multiple daily insulin injections, intensive insulin therapy, glycemic control, HbA1c, blood glucose monitoring, insulin dose adjustment, diabetes self-management education, adverse events, hypoglycemia, glycemic variability, glycemic variability index, glycemic variability index 2, glycemic variability index 3
MeSH terms
Continuous Glucose Monitoring, Adult, Aged, Blood Glucose, Diabetes Mellitus, Type 2, Female, Glycated Hemoglobin, Humans, Hypoglycemic Agents, Insulin, Male, Middle Aged, Patient Education as Topic, Blood Glucose Self-Monitoring

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