| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2055 |
85.6%
|
| 1 | Only once | 100 |
4.2%
|
| 2 | A few times | 145 |
6%
|
| 3 | Often | 84 |
3.5%
|
| 9 | Don't know | 16 |
0.7%
|
| 998 | Refused | 0 |
0%
|