| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 112 |
6.3%
|
| 2 | Once | 279 |
15.8%
|
| 3 | Few times | 824 |
46.7%
|
| 4 | Many times | 549 |
31.1%
|
| Sysmiss | 18236 |