| Value | Category | Cases | |
|---|---|---|---|
| 0 | never | 1381 |
69.2%
|
| 1 | once | 166 |
8.3%
|
| 2 | a few times | 274 |
13.7%
|
| 3 | often | 176 |
8.8%
|
| Sysmiss | 7 |