Randomized Trial of Stage-Based Interventions for Informed Medicare Choices

A randomized trial involving 1,351 new Medicare enrollees was conducted to assess the efficacy of a transtheoretical model based manual and multimedia expert system program that delivered guidance and feed-back matched to individual stage of readiness to compare Medicare health plans. At 6 months post-intervention, compared to enrollees in the control group, those receiving the manual plus expert system intervention or the manual alone exhibited greater increases in Medicare knowledge.