| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 4113 |
68.2%
|
| 2 | Once | 826 |
13.7%
|
| 3 | 2-5 times | 538 |
8.9%
|
| 4 | 6-10 times | 214 |
3.6%
|
| 5 | Everyday | 336 |
5.6%
|
| Sysmiss | 204 |