| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 13 |
0.5%
|
| 0 | Never | 1685 |
69.3%
|
| 1 | Only once | 323 |
13.3%
|
| 2 | A few times | 279 |
11.5%
|
| 3 | Often | 110 |
4.5%
|
| 9 | Don't know | 21 |
0.9%
|
| 998 | Refused | 0 |
0%
|