| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once | 7 |
0.1%
|
| 2 | Twice | 3 |
0%
|
| 3 | Three times | 2 |
0%
|
| 4 | Four times | 4 |
0%
|
| 5 | More | 1 |
0%
|
| 6 | Never | 1883 |
14.2%
|
| 7 | Not Applicable | 11346 |
85.7%
|
| Sysmiss | 822 |