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- Rahul Gupta, Satyam Singh Jayant, Ashu Rastogi, Sanjay K Bhadada, Anil Bhansali, Naresh Sachdeva, and Sant Ram.
- Department of Endocrinology, Diabetes and Metabolism, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
- Postgrad Med J. 2021 Dec 15.
BackgroundDiabetes prevalence estimates suggest an increasing trend in South-East Asia region, but studies on its incidence are limited. The current study aims to estimate the incidence of type 2 diabetes and pre-diabetes in a population-based cohort from India.MethodsA subset of Chandigarh Urban Diabetes Study cohort (n=1878) with normoglycaemia or pre-diabetes at baseline was prospectively followed after a median of 11 (0.5-11) years. Diabetes and pre-diabetes were diagnosed as per WHO guidelines. The incidence with 95% CI was calculated in 1000 person-years and Cox proportional hazard model was used to find the association between the risk factors and progression to pre-diabetes and diabetes.ResultsThe incidence of diabetes, pre-diabetes and dysglycaemia (either pre-diabetes or diabetes) was 21.6 (17.8-26.1), 18.8 (14.8-23.4) and 31.7 (26.5-37.6) per 1000 person-years, respectively. Age (HR 1.02, 95% CI 1.01 to 1.04), family history of diabetes (HR 1.56, 95% CI 1.09 to 2.25) and sedentary lifestyle (HR 1.51, 95% CI 1.05 to 2.17) predicted conversion from normoglycaemia to dysglycaemia, while obesity (HR 2.43, 95% CI 1.21 to 4.89) predicted conversion from pre-diabetes to diabetes.ConclusionA high incidence of diabetes and pre-diabetes in Asian-Indians suggests a faster conversion rate to dysglycaemia, which is partly explained by sedentary lifestyle and consequent obesity in these individuals. The high incidence rates call for a pressing need for public health interventions targeting modifiable risk factors.© The Author(s) 2021. Published by Oxford University Press on behalf of Postgraduate Medical Journal. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
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