| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1599 |
66.8%
|
| 1 | Only once | 226 |
9.4%
|
| 2 | A few times | 275 |
11.5%
|
| 3 | Often | 100 |
4.2%
|
| 8 | Refused | 56 |
2.3%
|
| 9 | Don’t know | 136 |
5.7%
|