| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 0 | Never | 858 |
71.7%
|
| 1 | Only once | 72 |
6%
|
| 2 | A few times | 158 |
13.2%
|
| 3 | Often | 97 |
8.1%
|
| 9 | Don't know | 11 |
0.9%
|
| 998 | Refused | 0 |
0%
|