| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1636 |
68.2%
|
| 1 | Only once | 250 |
10.4%
|
| 2 | A few times | 325 |
13.5%
|
| 3 | Often | 176 |
7.3%
|
| 9 | Don't know | 13 |
0.5%
|
| 98 | Refused | 0 |
0%
|