| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 0 |
0%
|
| 2 | Once | 28 |
90.3%
|
| 3 | Few times | 2 |
6.5%
|
| 4 | Many times | 1 |
3.2%
|
| Sysmiss | 19969 |