The frequency of intermittently scanned glucose and diurnal variation of glycemic metrics
Open accessAbstract
Background: The relation between the frequency of intermittently scanned continuous glucose monitoring (isCGM) and diurnal variation of time in range (TIR) and time below range (TBR) is unknown. Method: A total of 163 persons with type 1 diabetes who used isCGM had glucose data for 60 days downloaded. Mean TIR and median TBR were calculated for 15-minute periods and presented for daytime and nighttime. The values for tertiles of scanning frequency were compared. Results: The 1st tertile ( n = 53) of the population scanned <10 times; the 2nd tertile ( n = 56) 10-13 times, and the 3rd tertile ( n = 54) >13 per 24 hours. TIR (%, mean ± (SD)) increased significantly from the 1st to the 3rd scan tertile both during the day (43.8 ± 14.8, 52.0 ± 12.3, 62.1 ± 12.8) and the night (44.5 ± 17.3, 52.3 ± 18.5, 64.0 ± 13.9; P < .0001). In contrast, TBR (median, (IQR)) was not significantly associated with scan tertiles during daytime (3.5% (1.1-7.8), 4.4% (1.8-6.1), 3.5% (2.1-6.1); P = .85) or nighttime (3.8% (1.4-13.7), 5.0% (1.6-9.6), 5.7% (3.6-10.9); P = .24). In a multiple regression model, a 50% increase in 24-hour scanning frequency was associated with a 7.8 percentage point increase in TIR (95% CI, 5.6-10.0). Conclusions: Increased scanning frequency was associated with a higher TIR both during daytime and nighttime with no change in TBR.
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The frequency of scanning with isCGM devices is correlated with improved outcomes.
“The frequency of scanning with isCGM devices is also correlated with improved outcomes (40-43).”
From 7. Diabetes Technology: Standards of Care in Diabetes—2025 (2025) · cites this paper as [40]
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“1464 Journal of Diabetes Science and Technology 16(6)”
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6. Glycemic Targets: <i>Standards of Medical Care in Diabetes—2021</i>
American Diabetes Association (2021) · Diabetes Care · doi:10.2337/dc21-s006 · Cited by 847 · see citing works
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Effects of unrestricted access to flash glucose monitoring in type 1 diabetes
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Self-citationGlycemic Metrics Derived From Intermittently Scanned Continuous Glucose Monitoring
Hansen, K. W., & Bibby, B. M. (2020) · Journal of Diabetes Science and Technology · doi:10.1177/1932296820975822 · Cited by 8 · see citing works
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7. Diabetes Technology: Standards of Care in Diabetes—2025
American Diabetes Association Professional Practice Committee, ElSayed, N. A., McCoy, R. G., Aleppo, G., Balapattabi, K., Beverly, E. A., Briggs Early, K., Bruemmer, D., Echouffo-Tcheugui, J. B., Ekhlaspour, L., et al. (2025) · Diabetes Care · doi:10.2337/dc25-s007 · Cited by 348 · see citing works
7. Diabetes Technology: <i>Standards of Care in Diabetes</i> — <i>2023</i>
ElSayed, N. A., Aleppo, G., Aroda, V. R., Bannuru, R. R., Brown, F. M., Bruemmer, D., Collins, B. S., Hilliard, M. E., Isaacs, D., Johnson, E. L., et al. (2023) · Diabetes Care · doi:10.2337/dc23-s007 · Cited by 301 · see citing works
7. Diabetes Technology: <i>Standards of Care in Diabetes—2024</i>
American Diabetes Association Professional Practice Committee, ElSayed, N. A., Aleppo, G., Bannuru, R. R., Bruemmer, D., Collins, B. S., Ekhlaspour, L., Hilliard, M. E., Johnson, E. L., Khunti, K., et al. (2024) · Diabetes Care · doi:10.2337/dc24-s007 · Cited by 281 · see citing works
7. Diabetes Technology: <i>Standards of Medical Care in Diabetes—2022</i>
American Diabetes Association Professional Practice Committee (2022) · Diabetes Care · doi:10.2337/dc22-s007 · Cited by 358 · see citing works
- Authors
- Hansen, K. W., & Bibby, B. M.
- Affiliations
- Regionshospitalet Silkeborg (DK)
- Aarhus University (DK)
- Corresponding author
- Hansen, Klavs W.
- Venue
- Journal of Diabetes Science and Technology
- Publisher
- SAGE Publications
- Published
- 2021-05-27
- Volume
- 16
- Issue
- 6
- Pages
- 1461-1465
- ISSN
- 1932-2968 (ISSN-L)
- PMC
- PMC9631535
- OpenAlex
- W3165377388
- Cited by
- 20
- References
- 14
- Citations by year
- 2026: 2 · 2025: 6 · 2024: 5 · 2023: 4 · 2022: 2 · 2021: 1
- FWCI
- 2.24
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Diabetes Science and Technology (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Rosa and Asta Jensen Foundation
- 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
- intermittently scanned continuous glucose monitoring, scanning frequency, time in range, time below range, diurnal variation, type 1 diabetes, glycemic metrics
- MeSH terms
- Blood Glucose, Diabetes Mellitus, Type 1, Glucose, Glycated Hemoglobin, Humans, Hypoglycemic Agents, Blood Glucose Self-Monitoring
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