| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 774 |
64.6%
|
| 1 | Just once or twice | 111 |
9.3%
|
| 2 | Several times | 155 |
12.9%
|
| 3 | Many times | 64 |
5.3%
|
| 4 | Always | 92 |
7.7%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 3 |
0.3%
|