| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1606 |
66.9%
|
| 1 | Only once | 286 |
11.9%
|
| 2 | A few times | 361 |
15%
|
| 3 | Often | 138 |
5.8%
|
| 9 | Don't know | 9 |
0.4%
|
| 98 | Refused | 0 |
0%
|