| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1995 |
83.1%
|
| 1 | Only once | 173 |
7.2%
|
| 2 | A few times | 164 |
6.8%
|
| 3 | Often | 65 |
2.7%
|
| 9 | Don't know | 3 |
0.1%
|
| 98 | Refused | 0 |
0%
|