Objective: To explore the association between perceived social support and self-care behaviors and whetherself-care confidence mediates the relationship between perceived social support and self-care behaviors in heart failure pa-tients. Methods: One hundred and twenty-seven inpatients with heart failure selected from the department of cardiologycompleted the self-care of heart failure index(V6) and Chinese Mandarin version of the Medical Outcomes Study Social Sup-port Survey(MOS-SSS-C). Results:(1)Affectio...