| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2044 |
85.2%
|
| 1 | Only once | 113 |
4.7%
|
| 2 | A few times | 154 |
6.4%
|
| 3 | Often | 66 |
2.8%
|
| 9 | Don't know | 23 |
1%
|
| 998 | Refused | 0 |
0%
|