| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 702 |
63.6%
|
| 1 | Only once | 179 |
16.2%
|
| 2 | A few times | 168 |
15.2%
|
| 3 | Often | 51 |
4.6%
|
| 9 | Don't know | 4 |
0.4%
|
| 998 | Refused | 0 |
0%
|