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- Eliasson, Bjoern, et al.
(författare)
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Associations Between HbA1c and Glucose Time in Range Using Continuous Glucose Monitoring in Type 1 Diabetes: Cross-Sectional Population-Based Study
- 2024
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Ingår i: DIABETES THERAPY. - 1869-6953 .- 1869-6961. ; 15:6, s. 1301-1312
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Tidskriftsartikel (refereegranskat)abstract
- Introduction Continuous glucose monitoring (CGM) introduces novel indicators of glycemic control.Methods This cross-sectional study, based on the Swedish National Diabetes Register, examines 27,980 adults with type 1 diabetes. It explores the relationships between HbA1c (glycated hemoglobin) and various CGM-derived metrics, including TIR (time in range, representing the percentage of time within the range of 4-10 mmol/l for 2 weeks), TAR (time above range), TBR (time below range), mean glucose, standard deviation (SD), and coefficient of variation (CV). Pearson correlation coefficients and linear regression models were utilized for estimation.Results The analysis included 46% women, 30% on insulin pump, 7% with previous coronary heart disease and 64% with retinopathy. Mean +/- SD values were age 48 +/- 18 years, diabetes duration 25 +/- 16 years, HbA1c 58.8 +/- 12.8 mmol/mol, TIR 58.8 +/- 19.0%, TAR 36.3 +/- 20.0%, TBR 4.7 +/- 5.4%, mean sensor glucose 9.2 +/- 2.0 mmol/l, SD 3.3 +/- 1.0 mmol/l, and CV 36 +/- 7%. The overall association between HbA1c and TIR was - 0.71 (Pearson's r), with R 2 0.51 in crude linear regression and 0.57 in an adjusted model. R 2 values between HbA1c and CGM mean glucose were 0.605 (unadjusted) 0.619 (adjusted) and TAR (unadjusted 0.554 and fully adjusted 0.568, respectively), while fully adjusted R 2 values were 0.458, 0.175 and 0.101 between HbA1c and CGM SD, CGM CV and TBR, respectively.Conclusions This descriptive study demonstrates that the degree of association between HbA1c and new and readily available CGM-derived metrics, i.e., time in range (TIR), time above range (TAR), and CGM mean glucose, is robust in assessing the management of individuals with type 1 diabetes in clinical settings. Metrics from CGM that pertain to variability and hypoglycemia exhibit only weak correlations with HbA1c.
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| 2. |
- Rawshani, Aidin, 1991, et al.
(författare)
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Severe COVID-19 in people with type 1 and type 2 diabetes in Sweden : A nationwide retrospective cohort study
- 2021
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Ingår i: The Lancet Regional Health. - : Elsevier. - 2666-7762. ; 4
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Tidskriftsartikel (refereegranskat)abstract
- Background: Whether infection with SARS-CoV-2 leads to excess risk of requiring hospitalization or intensive care in persons with diabetes has not been reported, nor have risk factors in diabetes associated with increased risk for these outcomes. Methods: We included 44,639 and 411,976 adult patients with type 1 and type 2 diabetes alive on Jan 1, 2020, and compared them to controls matched for age, sex, and county of residence (n=204,919 and 1,948,900). Age- and sex-standardized rates for COVID-19 related hospitalizations, admissions to intensive care and death, were estimated and hazard ratios were calculated using Cox regression analyses. Findings: There were 10,486 hospitalizations and 1,416 admissions into intensive care. A total of 1,175 patients with diabetes and 1,820 matched controls died from COVID-19, of these 53.2% had been hospitalized and 10.7% had been in intensive care. Patients with type 2 diabetes, compared to controls, displayed an ageand sex-adjusted hazard ratio (HR) of 2.22, 95%CI 2.13-2.32) of being hospitalized for COVID-19, which decreased to HR 1.40, 95%CI 1.34-1.47) after further adjustment for sociodemographic factors, pharmacological treatment and comorbidities, had higher risk for admission to ICU due to COVID-19 (age- and sexadjusted HR 2.49, 95%CI 2.22-2.79, decreasing to 1.42, 95%CI 1.25-1.62 after adjustment, and increased risk for death due to COVID-19 (age- and sex-adjusted HR 2.19, 95%CI 2.03-2.36, complete adjustment 1.50, 95%CI 1.39-1.63). Age- and sex-adjusted HR for COVID-19 hospitalization for type 1 diabetes was 2.10, 95%CI 1.72-2.57), decreasing to 1.25, 95%CI 0.3097-1.62) after adjustment. Patients with diabetes type 1 were twice as likely to require intensive care for COVID-19, however, not after adjustment (HR 1.49, 95%CI 0.75-2.92), and more likely to die (HR 2.90, 95% CI 1.6554-5.47) from COVID-19, but not independently of other factors (HR 1.38, 95% CI 0.64-2.99). Among patients with diabetes, elevated glycated hemoglobin levels were associated with higher risk for most outcomes. Interpretation: In this nationwide study, type 2 diabetes was independently associated with increased risk of hospitalization, admission to intensive care and death for COVID-19. There were few admissions into intensive care and deaths in type 1 diabetes, and although hazards were significantly raised for all three outcomes, there was no independent risk persisting after adjustment for confounding factors. (C) 2021 The Authors. Published by Elsevier Ltd.
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