| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 668 |
55.7%
|
| 1 | Just once or twice | 220 |
18.3%
|
| 2 | Several times | 195 |
16.3%
|
| 3 | Many times | 86 |
7.2%
|
| 4 | Always | 27 |
2.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 4 |
0.3%
|