| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 89 |
7.4%
|
| 1 | Just once or twice | 123 |
10.2%
|
| 2 | Several times | 399 |
33.1%
|
| 3 | Many times | 376 |
31.2%
|
| 4 | Always | 209 |
17.4%
|
| 8 | Refused | 2 |
0.2%
|
| 9 | Don't know | 6 |
0.5%
|