| Demographic variable | Interview (n = 18) | |
| Demographic characteristics | ||
| Gender (male) | 14 (78%) | |
| Age (years) | 63.22±9.04 | |
| Living situation (living alone) | 0 | |
| Employment (employed) | 3 (16%) | |
| Cardiac characteristics | ||
| Etiology of heart failure | ||
| Dilated cardiomyopathy | 6 (33%) | |
| Ischemic heart disease | 6 (33%) | |
| Valvular disease | 4 (22%) | |
| Others | 2 (11%) | |
| NYHA functional class | ||
| II | 18 (100%) | |
| Device | ||
| ICD | 5 (28%) | |
| CRT-D | 13 (72%) | |