Data of medical history, clinical examinnation biochemical tests, echocardiography. All patients had a 6-minute walking test (6MWT), 6-minute walking distance measurement (6MWD) and were monitored for mortality and re-hospitalization during 6 months after discharge. COX regression model was used to investigate the relation between the 6-minute walk test and some other prognostic factors in heart failure with the composite of death and re - hospitalization.