| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 758 |
63.2%
|
| 1 | Just once or twice | 167 |
13.9%
|
| 2 | Several times | 144 |
12%
|
| 3 | Many times | 80 |
6.7%
|
| 4 | Always | 48 |
4%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 3 |
0.3%
|