| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 361 |
64.3%
|
| 2 | Once | 107 |
19.1%
|
| 3 | A few times | 80 |
14.3%
|
| 4 | Many times (more than 5) | 13 |
2.3%
|
| Sysmiss | 6110 |