| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1312 |
54.7%
|
| 1 | Only once | 304 |
12.7%
|
| 2 | A few times | 501 |
20.9%
|
| 3 | Often | 271 |
11.3%
|
| 9 | Don't know | 12 |
0.5%
|
| 98 | Refused | 0 |
0%
|