| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 2 |
0.2%
|
| 0 | Never | 1023 |
85.3%
|
| 1 | Only once | 70 |
5.8%
|
| 2 | A few times | 46 |
3.8%
|
| 3 | Often | 19 |
1.6%
|
| 9 | Don't know | 39 |
3.3%
|
| 998 | Refused | 0 |
0%
|