| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 252 |
21%
|
| 1 | Just once or twice | 182 |
15.2%
|
| 2 | Several times | 296 |
24.7%
|
| 3 | Many times | 347 |
28.9%
|
| 4 | Always | 120 |
10%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 2 |
0.2%
|