Follow-up for this study lasted 72 weeks. Participants were randomly assigned to receive either care as usual or the enhanced telephone support intervention plus care as usual. The telephone support intervention involved phone calls made weekly for the first 8 weeks of the study and then every 2 weeks for the next 40 weeks. Nurses made these calls at a time and place participants chose. During the calls, nurses provided information, motivational enhancement, and problem-solving skills.