Cited by 530Diabetes Management and ResearchDiabetes Treatment and ManagementDiabetes, Cardiovascular Risks, and Lipoproteins

Long-term Glycemic Variability and Risk of Adverse Outcomes: A Systematic Review and Meta-analysis

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Gorst, Catherine, Kwok, Chun Shing, Aslam, Saadia, Buchan, Iain, Kontopantelis, Evangelos, Myint, Phyo K., Heatlie, Grant, Loke, Yoon +2 more·2015·Diabetes Care

Abstract

OBJECTIVE: Glycemic variability is emerging as a measure of glycemic control, which may be a reliable predictor of complications. This systematic review and meta-analysis evaluates the association between HbA1c variability and micro- and macrovascular complications and mortality in type 1 and type 2 diabetes. RESEARCH DESIGN AND METHODS: Medline and Embase were searched (2004–2015) for studies describing associations between HbA1c variability and adverse outcomes in patients with type 1 and type 2 diabetes. Data extraction was performed independently by two reviewers. Random-effects meta-analysis was performed with stratification according to the measure of HbA1c variability, method of analysis, and diabetes type. RESULTS: Seven studies evaluated HbA1c variability among patients with type 1 diabetes and showed an association of HbA1c variability with renal disease (risk ratio 1.56 [95% CI 1.08–2.25], two studies), cardiovascular events (1.98 [1.39–2.82]), and retinopathy (2.11 [1.54–2.89]). Thirteen studies evaluated HbA1c variability among patients with type 2 diabetes. Higher HbA1c variability was associated with higher risk of renal disease (1.34 [1.15–1.57], two studies), macrovascular events (1.21 [1.06–1.38]), ulceration/gangrene (1.50 [1.06–2.12]), cardiovascular disease (1.27 [1.15–1.40]), and mortality (1.34 [1.18–1.53]). Most studies were retrospective with lack of adjustment for potential confounders, and inconsistency existed in the definition of HbA1c variability. CONCLUSIONS: HbA1c variability was positively associated with micro- and macrovascular complications and mortality independently of the HbA1c level and might play a future role in clinical risk assessment.

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  1. Raman S, Delurgio S, Lind M, Kosiborod M, Fridlington A, Wiedmer E, et al. A1c Variability Predicts the Risk of Microalbuminuria among Children with Type 1 Diabetes Mellitus. Diabetes. 2005;54:A332.
  2. Loke YK, Price D, Herxheimer A. Cochrane handbook for systematic reviews of interventions. JPT H, S G, editors. Chichester (UK): John Wiley & Sons; 2008. Chapter 14: Adverse effects p.
  3. Nazim J, W F, Starzyk J. Metabolic control and its variability are major risk factors for microalbuminuria in children with type 1 diabetes. Endokrynol Pol. 2013;65(2):83-9.

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Authors
Gorst, C., Kwok, C. S., Aslam, S., Buchan, I., Kontopantelis, E., Myint, P. K., Heatlie, G., Loke, Y., Rutter, M. K., & Mamas, M. A.
Affiliations
  • Institute of Population Health, Centre for Primary Care, University of Manchester, Manchester, U.K.
  • University Hospitals of North Midlands NHS Trust (GB)
  • Manchester Academic Health Science Centre (GB)
  • University of Manchester (GB)
  • University of Aberdeen (GB)
  • University of East Anglia (GB)
Venue
Diabetes Care
Published
2015-11-19
Volume
38
Issue
12
Pages
2354-2369
ISSN
  • 0149-5992 (ISSN-L)
  • 1935-5548
OpenAlex
W2187025414
Cited by
530
References
52
Citations by year
2026: 26 · 2025: 48 · 2024: 56 · 2023: 45 · 2022: 60 · 2021: 71 · 2020: 63 · 2019: 52 · 2018: 47 · 2017: 43 · 2016: 17
FWCI
5.37
Type
journal article
Language
en
Open access
Locations
  • Diabetes Care (publishedVersion)
  • PubMed (publishedVersion)
  • UEA Digital Repository (University of East Anglia) (acceptedVersion)
  • Aberdeen University Research Archive (Aberdeen University) (submittedVersion)
  • Keele Research Repository (Keele University) (submittedVersion, cc-by)
  • Research Explorer (The University of Manchester) (submittedVersion)
Funders
  • National Institute for Health and Care Research (ACF-2013-06-001)
  • Medical Research Council (MR/K006665/1, MC_PC_13042)
  • Economic and Social Research Council (ES/J010014/1, ES/F029721/1)
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, Cardiovascular Risks, and Lipoproteins
Keywords
glycemic variability, HbA1c variability, type 1 diabetes, type 2 diabetes, microvascular complications, macrovascular complications, diabetic nephropathy, diabetic retinopathy, cardiovascular disease, mortality, diabetic foot ulcer, risk prediction
MeSH terms
Blood Glucose, Cardiovascular Diseases, Diabetes Mellitus, Type 1, Diabetes Mellitus, Type 2, Diabetic Angiopathies, Glycated Hemoglobin, Humans, Risk Factors

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