| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1572 |
65.5%
|
| 1 | Just once or twice | 320 |
13.3%
|
| 2 | Several times | 222 |
9.3%
|
| 3 | Many times | 150 |
6.3%
|
| 4 | Always | 130 |
5.4%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 6 |
0.3%
|