| Value | Category | Cases | |
|---|---|---|---|
| -1 | missing | 0 |
0%
|
| 0 | never | 29734 |
61.8%
|
| 1 | just once or twice | 6047 |
12.6%
|
| 2 | several times | 5749 |
12%
|
| 3 | many times | 3809 |
7.9%
|
| 4 | always | 2639 |
5.5%
|
| 8 | refused | 7 |
0%
|
| 9 | don't know | 99 |
0.2%
|