Observational studyDiabetes research and clinical practice2020
Newly-diagnosed diabetes and admission hyperglycemia predict COVID-19 severity by aggravating respiratory deterioration.
Observational study in Diabetes research and clinical practice, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 130 papers, 11 of them syntheses that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
130 citing papers in PubMed, 11 syntheses or guidelines pooled it, 230 citations in OpenAlex.
- Viral reactivations and co-infections in COVID-19 patients: a systematic review.BMC infectious diseases · 2023Pooled it
- Increased risk of new-onset diabetes in patients with COVID-19: a systematic review and meta-analysis.Frontiers in public health · 2023Pooled it
- Prognostic factors for mortality, intensive care unit and hospital admission due to SARS-CoV-2: a systematic review and meta-analysis of cohort studies in Europe.European respiratory review : an official journal of the European Respiratory Society · 2022Pooled it
- Glucocorticoid-Induced Hyperglycemia Including Dexamethasone-Associated Hyperglycemia in COVID-19 Infection: A Systematic Review.Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists · 2022Pooled it
- Prevalence and impact of diabetes in hospitalized COVID-19 patients: A systematic review and meta-analysis.Journal of diabetes · 2022Pooled it
- Elevated HbA1c levels in pre-Covid-19 infection increases the risk of mortality: A sistematic review and meta-analysis.Diabetes/metabolism research and reviews · 2022Pooled it
- Association of serum C-reactive protein (CRP) and D-dimer concentration on the severity of COVID-19 cases with or without diabetes: a systematic review and meta-analysis.Expert review of endocrinology & metabolism · 2022Pooled it
- Managing diabetes in diabetic patients with COVID: where do we start from?Acta diabetologica · 2021Pooled it
- Impact of cardiovascular disease on clinical outcomes in hospitalized patients with Covid-19: a systematic review and meta-analysis.Internal and emergency medicine · 2021Pooled it
- Proportion of newly diagnosed diabetes in COVID-19 patients: A systematic review and meta-analysis.Diabetes, obesity & metabolism · 2021Pooled it
- High admission blood glucose independently predicts poor prognosis in COVID-19 patients: A systematic review and dose-response meta-analysis.Diabetes research and clinical practice · 2021Pooled it
- Predictive Value of the CURB-65, MuLBSTA, Pneumonia Severity Index Scores and Laboratory Parameters for In-Hospital Mortality in Patients with Diabetes Mellitus and COVID-19 Infection.Journal of clinical medicine · 2026Article
- Three- and Nine-Month Follow-Up of Patients with COVID-19: Clinical, Functional, and Radiological Outcomes.Journal of clinical medicine · 2026Article
- Glycemic Alterations in Hospitalized COVID-19 Patients: Hyperglycemia and Newly Detected Diabetes.Epidemiologia (Basel, Switzerland) · 2026Article
- A Unique Patient Stratification Method Combined with a Machine Learning Approach Identifies Novel Genetic Susceptibility and Protective Factors for Severe COVID-19 in a Hungarian Population.International journal of molecular sciences · 2026Article
- Acute Hyperglycaemia, Insulin Resistance, and Cytokine Dysregulation as Predictors of Disease Severity in Non-Diabetic Hospitalised COVID-19 Patients.International journal of molecular sciences · 2026Article
- Neural Regulation of Blood Glucose in Acute Stress: A Report on Research Supported by Pathway to Stop Diabetes.Diabetes · 2026Review
- Prevalence and Factors Associated with Hyperglycaemia Among Newly Admitted Medical Patients at a Tertiary Hospital in Eastern Uganda: A Cross-Sectional Study.Diabetes, metabolic syndrome and obesity : targets and therapy · 2026Article
- Admission Hyperglycemia as an Early Predictor of Severity and Poor Prognosis in COVID-19: A Retrospective Cohort Study of Hospitalized Adults.Journal of clinical medicine · 2025Article
- Hyperglycemia in the diabetic range, but not previous diagnosis of diabetes mellitus, is an independent indicator of poor outcome in patients hospitalized for severe COVID-19.Acta diabetologica · 2025Observational
70 more citing papers are in PubMed but not listed here.
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Authors and funding
22 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimsWe investigated whether pre-existing diabetes, newly-diagnosed diabetes, and admission hyperglycemia were associated with COVID-19 severity independently from confounders.
methodsWe retrospectively analyzed data on patients with COVID-19 hospitalized between February and April 2020 in an outbreak hospital in North-East Italy. Pre-existing diabetes was defined by self-reported history, electronic medical records, or ongoing medications. Newly-diagnosed diabetes was defined by HbA1c and fasting glucose. The primary outcome was a composite of ICU admission or death.
results413 subjects were included, 107 of whom (25.6%) had diabetes, including 21 newly-diagnosed. Patients with diabetes were older and had greater comorbidity burden. The primary outcome occurred in 37.4% of patients with diabetes compared to 20.3% in those without (RR 1.85; 95%C.I. 1.33-2.57; p < 0.001). The association was stronger for newly-diagnosed compared to pre-existing diabetes (RR 3.06 vs 1.55; p = 0.004). Higher glucose level at admission was associated with COVID-19 severity, with a stronger association among patients without as compared to those with pre-existing diabetes (interaction p < 0.001). Admission glucose was correlated with most clinical severity indexes and its association with adverse outcome was mostly mediated by a worse respiratory function.
conclusionNewly-diagnosed diabetes and admission hyperglycemia are powerful predictors of COVID-19 severity due to rapid respiratory deterioration.
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