| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 592 |
49.4%
|
| 1 | Just once or twice | 207 |
17.3%
|
| 2 | Several times | 226 |
18.9%
|
| 3 | Many times | 125 |
10.4%
|
| 4 | Always | 46 |
3.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 2 |
0.2%
|