| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1201 |
89%
|
| 1 | Only once | 30 |
2.2%
|
| 2 | A few times | 48 |
3.6%
|
| 3 | Often | 22 |
1.6%
|
| 9 | Don't know | 49 |
3.6%
|
| 998 | Refused | 0 |
0%
|