The DPP lifestyle intervention was designed to be administered consistently across the 27 centers and 1,079 participants in this arm of the trial and to allow maximum flexibility, given the heterogeneity of the participants. The 3,234 participants randomized to the three-arm trial in the DPP (1,079 randomized to lifestyle intervention) averaged 51 years of age at baseline, with 20% aged ≥60 years; 68% were women, 55% were Caucasian, 20% were African American, 16% were Hispanic American, 5% were American Indian, and 4% were Asian American (8).