| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1020 |
85%
|
| 1 | Only once | 73 |
6.1%
|
| 2 | A few times | 74 |
6.2%
|
| 3 | Often | 33 |
2.8%
|
| 9 | Don't know | 0 |
0%
|
| 998 | Refused | 0 |
0%
|