| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1075 |
89.6%
|
| 1 | Only once | 48 |
4%
|
| 2 | A few times | 41 |
3.4%
|
| 3 | Often | 34 |
2.8%
|
| 8 | Refused | 2 |
0.2%
|
| 9 | Don’t know | 0 |
0%
|