| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1283 |
54.3%
|
| 1 | Only once | 275 |
11.6%
|
| 2 | A few times | 488 |
20.7%
|
| 3 | Often | 313 |
13.2%
|
| 9 | Don't know | 4 |
0.2%
|
| 998 | Refused | 0 |
0%
|