| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 977 |
79.3%
|
| 1 | Only once | 100 |
8.1%
|
| 2 | A few times | 111 |
9%
|
| 3 | Often | 41 |
3.3%
|
| 9 | Don't know | 3 |
0.2%
|
| 998 | Refused | 0 |
0%
|