| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 0 |
0%
|
| 2 | Once | 68 |
17.3%
|
| 3 | Few times | 180 |
45.7%
|
| 4 | Many times | 146 |
37.1%
|
| Sysmiss | 19606 |