| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 623 |
51.9%
|
| 1 | Just once or twice | 257 |
21.4%
|
| 2 | Several times | 135 |
11.3%
|
| 3 | Many times | 122 |
10.2%
|
| 4 | Always | 61 |
5.1%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 2 |
0.2%
|