| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once | 1 |
0%
|
| 2 | Twice | 1 |
0%
|
| 3 | Three times | 1 |
0%
|
| 4 | Four times | 1 |
0%
|
| 5 | More | 0 |
0%
|
| 6 | Never | 83 |
0.7%
|
| 7 | Not applicable | 11077 |
99.2%
|
| Sysmiss | 1049 |