| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1039 |
86.6%
|
| 1 | Only once | 79 |
6.6%
|
| 2 | A few times | 67 |
5.6%
|
| 3 | Often | 14 |
1.2%
|
| 9 | Don't know | 1 |
0.1%
|
| 998 | Refused | 0 |
0%
|