| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 475 |
39.5%
|
| 1 | Just once or twice | 138 |
11.5%
|
| 2 | Several times | 314 |
26.1%
|
| 3 | Many times | 205 |
17%
|
| 4 | Always | 65 |
5.4%
|
| 8 | Refused | 2 |
0.2%
|
| 9 | Don't know | 5 |
0.4%
|