| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 644 |
53.7%
|
| 1 | Just once or twice | 133 |
11.1%
|
| 2 | Several times | 165 |
13.8%
|
| 3 | Many times | 122 |
10.2%
|
| 4 | Always | 136 |
11.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 0 |
0%
|