| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 645 |
53.8%
|
| 1 | Just once or twice | 211 |
17.6%
|
| 2 | Several times | 135 |
11.3%
|
| 3 | Many times | 102 |
8.5%
|
| 4 | Always | 105 |
8.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 2 |
0.2%
|