| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every day | 13 |
0.2%
|
| 2 | More than once a week | 47 |
0.8%
|
| 3 | About once a week | 50 |
0.9%
|
| 4 | About once a month | 70 |
1.2%
|
| 5 | A few times a year | 110 |
1.9%
|
| 6 | Never | 5534 |
95%
|
| Sysmiss | 4036 |