| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 636 |
53%
|
| 1 | Just once or twice | 148 |
12.3%
|
| 2 | Several times | 225 |
18.8%
|
| 3 | Many times | 140 |
11.7%
|
| 4 | Always | 51 |
4.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 0 |
0%
|