| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 662 |
55.3%
|
| 1 | Just once or twice | 178 |
14.9%
|
| 2 | Several times | 201 |
16.8%
|
| 3 | Many times | 87 |
7.3%
|
| 4 | Always | 67 |
5.6%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 3 |
0.3%
|