| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 563 |
46.9%
|
| 1 | Just once or twice | 157 |
13.1%
|
| 2 | Several times | 237 |
19.8%
|
| 3 | Many times | 138 |
11.5%
|
| 4 | Always | 99 |
8.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 6 |
0.5%
|