| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 530 |
44.2%
|
| 1 | Just once or twice | 115 |
9.6%
|
| 2 | Several times | 179 |
14.9%
|
| 3 | Many times | 133 |
11.1%
|
| 4 | Always | 240 |
20%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 2 |
0.2%
|