The trial , which was developed using the RE-AIM framework , will contrast the effects of 3 interventions : ( 1 ) a standard care , small group , diabetes prevention education class ( SG ) , ( 2 ) the small group intervention plus 12 months of interactive voice response telephone follow-up ( SG-IVR ) , and ( 3 ) a DVD version of the small group intervention with the same IVR follow-up ( DVD-IVR ) .