| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 873 |
72.8%
|
| 1 | Only once | 74 |
6.2%
|
| 2 | A few times | 152 |
12.7%
|
| 3 | Often | 94 |
7.8%
|
| 9 | Don't know | 7 |
0.6%
|
| 998 | Refused | 0 |
0%
|