| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 840 |
52.5%
|
| 1 | Just once or twice | 342 |
21.4%
|
| 2 | Several times | 273 |
17.1%
|
| 3 | Many times | 109 |
6.8%
|
| 4 | Always | 35 |
2.2%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|