Abstract
Objective: To identify and prevent the vulnerable prediabetic population becoming diabetic patients in the future using the Indian Diabetic Risk Score (IDRS) and to evaluate the performance of the IDRS questionnaire for detecting prediabetes and predicting the risk of Type 2 Diabetes Mellitus in Chidambaram rural Indian population.
 Methods: A cross-sectional descriptive study was carried out among patients attending a master health check-up of RMMCH hospital located at Chidambaram. The IDRS was calculated by using four simple measures of age, family history of diabetes, physical activity, and waist measurement. The relevant blood test, like Fasting plasma glucose (FBS), Glycated hemoglobin (HbA1C) test, were observed for identifying prediabetes. Subjects were classified as Normoglycemic, prediabetics, and diabetics based on the questionnaire and diagnostic criteria of the Indian Council of Medical Research (ICMR) guidelines.
 Results: In the study, sensitivity and specificity of IDRS score were found to be 84.21% and 63.4% respectively for detecting prediabetes in community with the positive predictive value of 51.6% and negative predictive value of 89.6% and prevalence of prediabetes in the Chidambaram rural population is 31.6% among the 60 participants.
 Conclusion: The Indian diabetic risk score questionnaire designed by Madras diabetic research federation is a useful screening tool to identify unknown type 2 diabetes mellitus. The questionnaire is a reliable, valuable, and easy to use screening tool which can be used in a primary care setup.
Highlights
Diabetes is one of the leading non-communicable diseases affecting a larger proportion of the population in the world
The global prevalence of type 2 diabetes mellitus in the year 2000 among adults was estimated to be 171 million and will rise to 366 million by 2030 and India is regarded as the diabetic capital of the world with an estimate of 72.9 million diabetic patients [1, 2]
Data was recorded on the "Prediabetes risk assessment Questionnaire" and information regarding age, socioeconomic status, family history of diabetes and hypertension, physical activity, dietary pattern, weight, height, Body Mass Index (BMI), waist circumference, and history of smoking and alcohol consumption were recorded
Summary
Diabetes is one of the leading non-communicable diseases affecting a larger proportion of the population in the world. The identification of persons with the probability of developing diabetes becomes crucial In this regard, prediabetes as an entity becomes an important factor in identifying high-risk individuals and will go a long way in the prevention and delay of the development of Type 2 diabetes mellitus. The term “Prediabetes” refers to a situation where the blood glucose levels are higher than normal, but not high enough to warrant a diagnosis of diabetes [3]. In this regard, according to the Indian diabetes study report of The Indian Council of Medical Research (ICMR), the vulnerable prediabetic population is estimated to be around 77.2 million currently. Which is more than the current diabetic population in India [4]
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