| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once | 276 |
92.3%
|
| 2 | Twice | 17 |
5.7%
|
| 3 | More than twice | 6 |
2%
|
| 98 | Don't Know | 0 |
0%
|
| Sysmiss | 33151 |