| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 495 |
41.3%
|
| 1 | Just once or twice | 122 |
10.2%
|
| 2 | Several times | 168 |
14%
|
| 3 | Many times | 123 |
10.3%
|
| 4 | Always | 102 |
8.5%
|
| 8 | Refused | 14 |
1.2%
|
| 9 | Don't know | 176 |
14.7%
|