| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1041 |
82.9%
|
| 1 | Only once | 45 |
3.6%
|
| 2 | A few times | 84 |
6.7%
|
| 3 | Often | 76 |
6.1%
|
| 9 | Don't know | 10 |
0.8%
|
| 998 | Refused | 0 |
0%
|