| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2062 |
85.9%
|
| 1 | Only once | 169 |
7%
|
| 2 | A few times | 123 |
5.1%
|
| 3 | Often | 46 |
1.9%
|
| 9 | Don't know | 0 |
0%
|
| 998 | Refused | 0 |
0%
|