| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 2 |
0.1%
|
| 0 | Never | 1087 |
45.3%
|
| 1 | Only once | 291 |
12.1%
|
| 2 | A few times | 591 |
24.6%
|
| 3 | Often | 425 |
17.7%
|
| 9 | Don't know | 2 |
0.1%
|
| 98 | Refused | 0 |
0%
|