The external validity and performance of the no-laboratory American Diabetes Association screening tool for identifying undiagnosed type 2 diabetes among the Iranian population

Aims The aim of this study is to assess the American Diabetes Association (ADA) risk score as a self-assessment screening tool for undiagnosed type 2 diabetes (T2DM) in Iran. Methods In a national survey of risk factors for non-communicable diseases, we included 3458 Iranian adults. The discrimination and validity were assessed using the area under the curve (AUC), sensitivity, specificity, Youden's index, positive and negative predictive values...