Intrahospital Prevalence of Diabetes and Prediabetes in Medical Departments in Upper Austria

Heinzl, Matthias W.; Resl, Michael; Kellermair, Jörg; Steinwender, Clemens; Mayr, Bernhard; Obereder, Jana; Fellner-Färber, Renate; Klammer, Carmen; Hartl, Stefanie; Brandner, Julia; Zierer, Andreas; Bernhard, David; Rega-Kaun, Gersina; Mader, Julia K.; Riedl, Michaela; Stingl, Harald; Stechemesser, Lars; Ress, Claudia; Fröhlich-Reiterer, Elke; Brix, Johanna M.; Wascher, Thomas C.; Sourij, Harald; Fasching, Peter; Clodi, Martin

doi:10.3390/jcm14113668

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Intrahospital Prevalence of Diabetes and Prediabetes in Medical Departments in Upper Austria

by

Matthias W. Heinzl

^1,2

,

Michael Resl

^1,2

,

Jörg Kellermair

^2,3,

Clemens Steinwender

^2,3,

Bernhard Mayr

⁴,

Jana Obereder

¹

,

Renate Fellner-Färber

¹,

Carmen Klammer

^1,2,

Stefanie Hartl

¹,

Julia Brandner

¹,

Andreas Zierer

^2,5,

David Bernhard

^2,6,

Gersina Rega-Kaun

⁷

,

Julia K. Mader

⁸

,

Michaela Riedl

⁹,

Harald Stingl

¹⁰,

Lars Stechemesser

¹¹,

Claudia Ress

¹²

,

Elke Fröhlich-Reiterer

¹³,

Johanna M. Brix

^14,15,

Thomas C. Wascher

¹⁶,

Harald Sourij

⁸

,

Peter Fasching

⁷

and

Martin Clodi

^1,2,*

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¹

Abteilung für Innere Medizin, Konventhospital Barmherzige Brüder Linz, 4020 Linz, Austria

²

Clinical Research Institute for Cardiovascular and Metabolic Diseases, Medical Faculty, Johannes Kepler University Linz, 4040 Linz, Austria

³

Klinik für Kardiologie und Internistische Intensivmedizin, Kepler Universitätsklinikum Linz, 4020 Linz, Austria

⁴

Abteilung für Innere Medizin, Salzkammergut-Klinikum Gmunden, 4810 Gmunden, Austria

⁵

Universitätsklinik für Herz-, Gefäß- und Thoraxchirurgie, Kepler Universitätsklinikum Linz, 4020 Linz, Austria

⁶

Institut für Physiologie und Pathophysiologie, Kepler Universitätsklinikum Linz, 4020 Linz, Austria

⁷

5. Medizinische Abteilung mit Endokrinologie, Rheumatologie und Akutgeriatrie, Klinik Ottakring, 1160 Vienna, Austria

⁸

Klinische Abteilung für Endokrinologie und Stoffwechsel, Universitäts-Klinik für Innere Medizin, Medizinische Universität Graz, 8036 Graz, Austria

⁹

Universitätsklinik für Innere Medizin III, Endokrinologie und Stoffwechsel, Medizinische Universität Wien, 1090 Vienna, Austria

¹⁰

Abteilung für Innere Medizin, Landesklinikum Baden, 2500 Baden, Austria

¹¹

Uniklinikum Salzburg, Universitätsklinik für Innere Medizin I, 1090 Vienna, Austria

¹²

Universitätsklinik für Innere Medizin I, Medizinische Universität Innsbruck, 6020 Innsbruck, Austria

¹³

Department für Allgemeine Pädiatrie, Universitätsklinik für Kinder- und Jugendheilkunde, Medizinische Universität Graz, 8010 Graz, Austria

¹⁴

Ist Medical Department, Diabetology, Endocrinology and Nephrology, Klinik Landstraße Wien, 1030 Vienna, Austria

¹⁵

Karl Landsteiner Institute for Obesity and Metabolism, 1030 Vienna, Austria

¹⁶

Medizinische Abteilung, Hanuschkrankenhaus Wien 1, 1140 Vienna, Austria

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^*

Author to whom correspondence should be addressed.

J. Clin. Med. 2025, 14(11), 3668; https://doi.org/10.3390/jcm14113668

Submission received: 4 April 2025 / Revised: 16 May 2025 / Accepted: 19 May 2025 / Published: 23 May 2025

(This article belongs to the Special Issue Chronic Complications of Type 2 Diabetes: Prevalence, Prevention, and Management)

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Abstract

Background: The intrahospital prevalence of diabetes and prediabetes is not well known in Austria and worldwide. Screening for diabetes in hospitalised patients requires systematic glycaemic assessment via HbA1c measurement, which is not routinely performed in all patients in most hospitals. This study is the first multicentre investigation to conduct structured HbA1c screening in hospitalised adult medical patients of all ages. Methods: In this exploratory multicentre analysis, HbA1c screening was performed in 3025 consecutive patients hospitalised at three different medical departments in Upper Austria. HbA1c screening was conducted over a period of three months between October 2023 and March 2024. Patients were diagnosed with diabetes (HbA1c ≥6.5% (≥48 mmol/mol)) or prediabetes (HbA1c 5.7–6.4% (39–47 mmol/mol)) based on HbA1c values or a previous diagnosis. Results: Dysglycaemia (diabetes or prediabetes) was identified in 1557 patients (51.5%). Diabetes was present in 840 patients (27.8%) and prediabetes in 717 patients (23.7%). A first-time diagnosis of diabetes was made in 73 patients (2.4%). The prevalence of diabetes was highest among patients aged 70–79 years (36.8% diabetes; 24.8% prediabetes). Conclusions: Structured HbA1c screening in 3025 consecutive hospitalised patients across three medical departments in Upper Austria revealed a diabetes prevalence of 27.8% and a prediabetes prevalence of 23.7%. Overall, dysglycaemia was present in 51.5% of hospitalised patients.

Keywords: prevalence; diabetes; prediabetes; dysglycaemia; intrahospital; HbA1c screening

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MDPI and ACS Style

Heinzl, M.W.; Resl, M.; Kellermair, J.; Steinwender, C.; Mayr, B.; Obereder, J.; Fellner-Färber, R.; Klammer, C.; Hartl, S.; Brandner, J.; et al. Intrahospital Prevalence of Diabetes and Prediabetes in Medical Departments in Upper Austria. J. Clin. Med. 2025, 14, 3668. https://doi.org/10.3390/jcm14113668

AMA Style

Heinzl MW, Resl M, Kellermair J, Steinwender C, Mayr B, Obereder J, Fellner-Färber R, Klammer C, Hartl S, Brandner J, et al. Intrahospital Prevalence of Diabetes and Prediabetes in Medical Departments in Upper Austria. Journal of Clinical Medicine. 2025; 14(11):3668. https://doi.org/10.3390/jcm14113668

Chicago/Turabian Style

Heinzl, Matthias W., Michael Resl, Jörg Kellermair, Clemens Steinwender, Bernhard Mayr, Jana Obereder, Renate Fellner-Färber, Carmen Klammer, Stefanie Hartl, Julia Brandner, and et al. 2025. "Intrahospital Prevalence of Diabetes and Prediabetes in Medical Departments in Upper Austria" Journal of Clinical Medicine 14, no. 11: 3668. https://doi.org/10.3390/jcm14113668

APA Style

Heinzl, M. W., Resl, M., Kellermair, J., Steinwender, C., Mayr, B., Obereder, J., Fellner-Färber, R., Klammer, C., Hartl, S., Brandner, J., Zierer, A., Bernhard, D., Rega-Kaun, G., Mader, J. K., Riedl, M., Stingl, H., Stechemesser, L., Ress, C., Fröhlich-Reiterer, E., ... Clodi, M. (2025). Intrahospital Prevalence of Diabetes and Prediabetes in Medical Departments in Upper Austria. Journal of Clinical Medicine, 14(11), 3668. https://doi.org/10.3390/jcm14113668

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Intrahospital Prevalence of Diabetes and Prediabetes in Medical Departments in Upper Austria

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