| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1699 |
73.1%
|
| 1 | Only once | 216 |
9.3%
|
| 2 | A few times | 271 |
11.7%
|
| 3 | Often | 116 |
5%
|
| 9 | Don't know | 22 |
0.9%
|
| 998 | Refused | 0 |
0%
|