| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 2 |
0.2%
|
| 0 | Never | 1073 |
84%
|
| 1 | Only once | 104 |
8.1%
|
| 2 | A few times | 76 |
5.9%
|
| 3 | Often | 23 |
1.8%
|
| 9 | Don't know | 0 |
0%
|
| 998 | Refused | 0 |
0%
|