IDF diabetes Atlas: Global estimates of undiagnosed diabetes in adults for 2021

Authors

Katherine Ogurtsova, Institute for Health Services Research and Health Economics, German Diabetes Center, Leibniz Center for Diabetes Research at the Heinrich-Heine-University Düsseldorf
Leonor Guariguata, Faculty of Medical Sciences, University of the West Indies
Noël C. Barengo, Herbert Wertheim College of Medicine & Robert Stempel College of Public Health, Florida International UniversityFollow
Paz Lopez-Doriga Ruiz, Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital; Norwegian Institute of Public Health
Julian W. Sacre, Baker Heart and Diabetes Institute, Melbourne
Suvi Karuranga, The International Diabetes Federation
Hong Sun, Seattle Epidemiologic Research and Information Center, VA Puget Sound Health Care System
Edward J. Boyko, Seattle Epidemiologic Research and Information Center, VA Puget Sound Health Care System
Dianna J. Magliano, Baker Heart and Diabetes Institute; Monash University, School of Public Health and Preventive Medicine

Date of this Version

12-6-2021

Document Type

Article

Abstract

AIMS: To provide up-to-date estimates of undiagnosed diabetes mellitus (UDM) prevalence - both globally, and by region/country, for the year 2021. METHODS: Data sources reporting diabetes prevalence were identified through a systematic search in the peer-reviewed and grey literature. The prevalence of undiagnosed diabetes was estimated from the data from each country where data was available. For countries without in-country data, the prevalence of undiagnosed diabetes was approximated by extrapolating the average of the estimates from countries with data sources within the same International Diabetes Federation (IDF) region and World Bank income grouping. We then applied these stratified prevalence estimates of UDM from each country to the number of adults in each strata and summed the counts to generate the number of adults with UDM (aged 20-79 years) for 215 countries and territories. RESULTS: In 2021, almost one in two adults (20-79 years old) with diabetes were unaware of their diabetes status (44.7%; 239.7 million). The highest proportions of undiagnosed diabetes (53.6%) were found in the Africa, Western Pacific (52.8%) and South-East Asia regions (51.3%), respectively. The lowest proportion of undiagnosed diabetes was observed in North America and the Caribbean (24.2%). CONCLUSIONS: Diabetes surveillance needs to be strengthened to reduce the prevalence of UDM, particularly in low- and middle-income countries.

Identifier

34883189 (pubmed); S0168-8227(21)00477-0 (pii); 10.1016/j.diabres.2021.109118 (doi)

Recommended Citation

Ogurtsova, Katherine; Guariguata, Leonor; Barengo, Noël C.; Ruiz, Paz Lopez-Doriga; Sacre, Julian W.; Karuranga, Suvi; Sun, Hong; Boyko, Edward J.; and Magliano, Dianna J., "IDF diabetes Atlas: Global estimates of undiagnosed diabetes in adults for 2021" (2021). HWCOM Faculty Publications. 202.
https://digitalcommons.fiu.edu/com_facpub/202