| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 8 |
0.7%
|
| 0 | Never | 907 |
78.1%
|
| 1 | Only once | 72 |
6.2%
|
| 2 | A few times | 111 |
9.6%
|
| 3 | Often | 61 |
5.3%
|
| 9 | Don't know | 2 |
0.2%
|
| 998 | Refused | 0 |
0%
|