| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 845 |
70.4%
|
| 1 | Only once | 164 |
13.7%
|
| 2 | A few times | 130 |
10.8%
|
| 3 | Often | 61 |
5.1%
|
| 9 | Don't know | 0 |
0%
|
| 998 | Refused | 0 |
0%
|