| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2170 |
91.8%
|
| 1 | Only once | 83 |
3.5%
|
| 2 | A few times | 82 |
3.5%
|
| 3 | Often | 21 |
0.9%
|
| 9 | Don't know | 7 |
0.3%
|
| 998 | Refused | 0 |
0%
|