| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once | 389 |
40.6%
|
| 2 | More than once | 569 |
59.4%
|
| 8 | DK | 0 |
0%
|
| 9 | Missing | 0 |
0%
|
| Sysmiss | 10005 |