| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 0 | Never | 1085 |
90.4%
|
| 1 | Only once | 37 |
3.1%
|
| 2 | A few times | 56 |
4.7%
|
| 3 | Often | 15 |
1.3%
|
| 9 | Dont know | 6 |
0.5%
|
| 998 | Refused | 0 |
0%
|