Baseline Characteristics of the Vitamin D and Type 2 Diabetes (D2d) Study—A Contemporary Prediabetes Cohort

Objective: Describe baseline characteristics of the NIH/ADA-supported D2d study, the first diabetes prevention trial in the U.S. to apply current ADA diagnostic glycemia criteria. Research Design and Methods: Multicenter (22 sites), randomized, double-blind, placebo-controlled, primary prevention trial testing efficacy of oral daily 4000 IU cholecalciferol (D3) compared to placebo on incident diabetes in adults at high risk. Eligible...