| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 618 |
51.6%
|
| 1 | Only once | 67 |
5.6%
|
| 2 | A few times | 237 |
19.8%
|
| 3 | Often | 267 |
22.3%
|
| 9 | Don't know | 8 |
0.7%
|
| 998 | Refused | 0 |
0%
|