| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 0 |
0%
|
| 2 | Once | 553 |
23.6%
|
| 3 | Few times | 1358 |
58%
|
| 4 | Many times | 429 |
18.3%
|
| Sysmiss | 17660 |