| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2242 |
93.4%
|
| 1 | Only once | 78 |
3.3%
|
| 2 | A few times | 60 |
2.5%
|
| 3 | Often | 18 |
0.8%
|
| 9 | Don't know | 2 |
0.1%
|
| 998 | Refused | 0 |
0%
|