| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every day | 26 |
0.4%
|
| 2 | More than once a week | 40 |
0.7%
|
| 3 | About once a week | 70 |
1.2%
|
| 4 | About once a month | 74 |
1.3%
|
| 5 | A few times a year | 158 |
2.7%
|
| 6 | Never | 5456 |
93.7%
|
| Sysmiss | 4036 |