| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 873 |
72.8%
|
| 1 | Just once or twice | 146 |
12.2%
|
| 2 | Several times | 110 |
9.2%
|
| 3 | Many times | 47 |
3.9%
|
| 4 | Always | 22 |
1.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 2 |
0.2%
|