| Choice | Number of users | Mean Global Usability rating |
|
| Several times a day | 2 (2%) | 60.00 | |
| Once a day | 14 (14%) | 65.34 | |
| Several times a week | 41 (41%) | 60.80 | |
| Once a week | 28 (28%) | 55.32 | |
| Several times a month | 9 (9%) | 52.75 | |
| Once a month | 4 (4%) | 51.50 | |
| Less than once a month | 2 (2%) | 44.00 | |