| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1297 |
81.1%
|
| 1 | Only once | 139 |
8.7%
|
| 2 | A few times | 122 |
7.6%
|
| 3 | Often | 40 |
2.5%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don’t know | 1 |
0.1%
|