| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1056 |
88%
|
| 1 | Only once | 46 |
3.8%
|
| 2 | A few times | 61 |
5.1%
|
| 3 | Often | 26 |
2.2%
|
| 9 | Don't know | 11 |
0.9%
|
| 998 | Refused | 0 |
0%
|