| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1612 |
67.2%
|
| 1 | Only once | 241 |
10%
|
| 2 | A few times | 417 |
17.4%
|
| 3 | Often | 124 |
5.2%
|
| 9 | Don't know | 6 |
0.3%
|
| 98 | Refused | 0 |
0%
|