| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 531 |
44.3%
|
| 1 | Just once or twice | 160 |
13.3%
|
| 2 | Several times | 257 |
21.4%
|
| 3 | Many times | 141 |
11.8%
|
| 4 | Always | 109 |
9.1%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 1 |
0.1%
|