| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2112 |
88%
|
| 1 | Only once | 104 |
4.3%
|
| 2 | A few times | 92 |
3.8%
|
| 3 | Often | 85 |
3.5%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 7 |
0.3%
|