| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 451 |
37.6%
|
| 1 | Just once or twice | 197 |
16.4%
|
| 2 | Several times | 320 |
26.7%
|
| 3 | Many times | 155 |
12.9%
|
| 4 | Always | 74 |
6.2%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 2 |
0.2%
|