| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 10 |
0.8%
|
| 0 | Never | 865 |
72.1%
|
| 1 | Only once | 49 |
4.1%
|
| 2 | A few times | 137 |
11.4%
|
| 3 | Often | 126 |
10.5%
|
| 9 | Don't know | 13 |
1.1%
|
| 998 | Refused | 0 |
0%
|