| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 811 |
67.6%
|
| 1 | Only once | 66 |
5.5%
|
| 2 | A few times | 170 |
14.2%
|
| 3 | Often | 140 |
11.7%
|
| 9 | Don't know | 13 |
1.1%
|
| 98 | Refused | 0 |
0%
|