| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 825 |
68.8%
|
| 1 | Only once | 143 |
11.9%
|
| 2 | A few times | 162 |
13.5%
|
| 3 | Often | 65 |
5.4%
|
| 9 | Don't know | 5 |
0.4%
|
| 998 | Refused | 0 |
0%
|