| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1716 |
71.7%
|
| 1 | Only once | 229 |
9.6%
|
| 2 | A few times | 179 |
7.5%
|
| 3 | Often | 64 |
2.7%
|
| 8 | Refused | 51 |
2.1%
|
| 9 | Don’t know | 153 |
6.4%
|