| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once a day | 4 |
22.2%
|
| 2 | More than once a day | 9 |
50%
|
| 3 | Once a week | 4 |
22.2%
|
| 4 | More than once a week | 1 |
5.6%
|
| 5 | Once a month | 0 |
0%
|
| 6 | Less than once a month | 0 |
0%
|
| Sysmiss | 107 |