| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1973 |
83.5%
|
| 1 | Only once | 153 |
6.5%
|
| 2 | A few times | 168 |
7.1%
|
| 3 | Often | 64 |
2.7%
|
| 9 | Don't know | 5 |
0.2%
|
| 998 | Refused | 0 |
0%
|