| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 25752 |
56.2%
|
| 1 | Only once | 3595 |
7.8%
|
| 2 | A few times | 7542 |
16.5%
|
| 3 | Often | 8571 |
18.7%
|
| 8 | Refused | 75 |
0.2%
|
| 9 | Don’t know | 288 |
0.6%
|