| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 973 |
81.1%
|
| 1 | Only once | 81 |
6.8%
|
| 2 | A few times | 102 |
8.5%
|
| 3 | Often | 44 |
3.7%
|
| 9 | Don't know | 0 |
0%
|
| 98 | Refused | 0 |
0%
|