| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 566 |
47.2%
|
| 1 | Just once or twice | 166 |
13.8%
|
| 2 | Several times | 205 |
17.1%
|
| 3 | Many times | 136 |
11.3%
|
| 4 | Always | 125 |
10.4%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 1 |
0.1%
|