| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 13 |
40.6%
|
| 2 | Several days a week | 8 |
25%
|
| 3 | Once a week | 3 |
9.4%
|
| 4 | Once a month | 3 |
9.4%
|
| 5 | Occasionally / when necessary | 5 |
15.6%
|
| Sysmiss | 4633 |