| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 7 |
0%
|
| 0 | Never | 21676 |
89%
|
| 1 | Only once | 1083 |
4.4%
|
| 2 | A few times | 1026 |
4.2%
|
| 3 | Often | 421 |
1.7%
|
| 9 | Don't know | 136 |
0.6%
|
| 998 | Refused | 0 |
0%
|
| Sysmiss | 1048 |