| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2122 |
88.4%
|
| 1 | Only once | 94 |
3.9%
|
| 2 | A few times | 112 |
4.7%
|
| 3 | Often | 56 |
2.3%
|
| 9 | Don't know | 16 |
0.7%
|
| 98 | Refused | 0 |
0%
|