| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 955 |
79.6%
|
| 1 | Only once | 55 |
4.6%
|
| 2 | A few times | 122 |
10.2%
|
| 3 | Often | 64 |
5.3%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don’t know | 3 |
0.3%
|