| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2078 |
86.6%
|
| 1 | Only once | 147 |
6.1%
|
| 2 | A few times | 138 |
5.8%
|
| 3 | Often | 35 |
1.5%
|
| 9 | Don't know | 2 |
0.1%
|
| 98 | Refused | 0 |
0%
|