| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1659 |
69.4%
|
| 1 | Only once | 227 |
9.5%
|
| 2 | A few times | 206 |
8.6%
|
| 3 | Often | 86 |
3.6%
|
| 8 | Refused | 57 |
2.4%
|
| 9 | Don’t know | 157 |
6.6%
|