| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 476 |
39.7%
|
| 1 | Just once or twice | 127 |
10.6%
|
| 2 | Several times | 329 |
27.4%
|
| 3 | Many times | 192 |
16%
|
| 4 | Always | 72 |
6%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 3 |
0.3%
|