| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once | 4 |
7.8%
|
| 2 | Twice | 1 |
2%
|
| 3 | Three times | 1 |
2%
|
| 4 | Four times | 0 |
0%
|
| 5 | More | 0 |
0%
|
| 6 | Never | 18 |
35.3%
|
| 7 | Not Applicable | 27 |
52.9%
|
| Sysmiss | 14017 |