| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 92 |
7.7%
|
| 1 | Just once or twice | 137 |
11.4%
|
| 2 | Several times | 325 |
27.1%
|
| 3 | Many times | 332 |
27.7%
|
| 4 | Always | 312 |
26%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 2 |
0.2%
|