| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1959 |
81.6%
|
| 1 | Only once | 180 |
7.5%
|
| 2 | A few times | 184 |
7.7%
|
| 3 | Often | 73 |
3%
|
| 8 | Refused to answer | 0 |
0%
|
| 9 | Don’t know | 4 |
0.2%
|