| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 3 |
0.3%
|
| 0 | Never | 987 |
82.3%
|
| 1 | Only once | 50 |
4.2%
|
| 2 | A few times | 64 |
5.3%
|
| 3 | Often | 51 |
4.3%
|
| 9 | Don't know | 44 |
3.7%
|
| 998 | Refused | 0 |
0%
|