| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1068 |
88.7%
|
| 1 | Only once | 52 |
4.3%
|
| 2 | A few times | 53 |
4.4%
|
| 3 | Often | 27 |
2.2%
|
| 8 | Refused | 3 |
0.2%
|
| 9 | Don’t know | 1 |
0.1%
|