| Value | Category | Cases | |
|---|---|---|---|
| 0 | never | 1135 |
52.3%
|
| 1 | once | 328 |
15.1%
|
| 2 | 2-5 times | 419 |
19.3%
|
| 3 | 6+ times | 288 |
13.3%
|
| Sysmiss | 5690 |