Table 1: Socio-demographic and clinical characteristics.
| Demographic characteristics (n = 29) | Frequency (%) |
| Age | Mean = 67.7 ± 8 |
| Gender Males Females |
(%) 18 (62.1%) 11 (37.9%) |
| Birthplace Born in the US Born outside the US Missing |
(%) 7 (24%) 20 (69%) |
| Educational background Elementary education High school education College education Other (not specified) |
(%) 9 (31%) 8 (28) 11 (38%) 1 (3%) |
| Literacy Score | 6 |
| Ownership of computer Yes No |
(%) 9 (31%) 20 (69%) |
| Computer expertise Novice Intermediate Expert |
(%) 21 (72%) 8 (28%) 0 |
| Usability Score | Mean = 108.1 ± 16.7 |
| Ejection fraction | Mean = 32.9% ± 14 |