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 [ HC ] , n = 54 ) , ( b ) clusters of patients and their guests in the transplant center ( group based [ GB ] , n = 49 ) , and ( c ) the individual patient alone in the transplant center ( individual counseling [ IC ] , n = 49 ) .