| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1027 |
85.6%
|
| 1 | Only once | 69 |
5.8%
|
| 2 | A few times | 64 |
5.3%
|
| 3 | Often | 34 |
2.8%
|
| 9 | Don't know | 6 |
0.5%
|
| 998 | Refused | 0 |
0%
|