| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1099 |
91.6%
|
| 1 | Only once | 43 |
3.6%
|
| 2 | A few times | 39 |
3.3%
|
| 3 | Often | 16 |
1.3%
|
| 9 | Don't know | 3 |
0.3%
|
| 98 | Refused | 0 |
0%
|