Patients were randomized to three interventions in which health educator ( s ) delivered an intervention to ( a ) the patient and his/her guests in the patient 's home ( house calls -LSB- HC -RSB- , n = @ ) , ( b ) clusters of patients and their guests in the transplant center ( group based -LSB- GB -RSB- , n = @ ) , and ( c ) the individual patient alone in the transplant center ( individual counseling -LSB- IC -RSB- , n = @ ) .