Identifying individuals at increased risk of developing diabetes has assumed increasing importance with the expansion of the evidence from clinical trials on the prevention or delay of type 2 diabetes using lifestyle modification and medication. The epidemiology of prediabetes depends on the diagnostic method used. Glucose measures defining impaired glucose tolerance and impaired fasting glucose levels identify about 10% of the adults to have prediabetes, whereas glycated hemoglobin-based criteria identify a significantly lower proportion of the population. Increasingly, multifactorial risk tools are being used and cut-points set to identify approximately 15% of the population as being at high risk.
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