| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 648 |
54.1%
|
| 1 | Only once | 98 |
8.2%
|
| 2 | A few times | 194 |
16.2%
|
| 3 | Often | 225 |
18.8%
|
| 9 | Don't know | 33 |
2.8%
|
| 998 | Refused | 0 |
0%
|