| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2012 |
83.8%
|
| 1 | Only once | 158 |
6.6%
|
| 2 | A few times | 175 |
7.3%
|
| 3 | Often | 55 |
2.3%
|
| 9 | Don't know | 0 |
0%
|
| 98 | Refused | 0 |
0%
|