| Value | Category | Cases | |
|---|---|---|---|
| -1 | 796 |
9.6%
|
|
| 0 | Never | 6611 |
79.7%
|
| 1 | Yes, daily | 384 |
4.6%
|
| 2 | Yes, Weekly | 201 |
2.4%
|
| 3 | Yes, occasionally | 299 |
3.6%
|
| Sysmiss | 6586 |