| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once | 17 |
68%
|
| 2 | Twice | 1 |
4%
|
| 3 | Three times | 0 |
0%
|
| 4 | Four times | 1 |
4%
|
| 5 | More | 0 |
0%
|
| 6 | Never | 6 |
24%
|
| Sysmiss | 13290 |