| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2129 |
88.7%
|
| 1 | Only once | 151 |
6.3%
|
| 2 | A few times | 88 |
3.7%
|
| 3 | Often | 27 |
1.1%
|
| 9 | Don't know | 5 |
0.2%
|
| 98 | Refused | 0 |
0%
|