| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1095 |
91.3%
|
| 1 | Only once | 27 |
2.3%
|
| 2 | A few times | 55 |
4.6%
|
| 3 | Often | 21 |
1.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 2 |
0.2%
|