| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once | 482 |
32.7%
|
| 2 | More than once | 990 |
67.3%
|
| 8 | DK | 0 |
0%
|
| 9 | Missing | 0 |
0%
|
| Sysmiss | 9491 |