| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 772 |
64.3%
|
| 1 | Just once or twice | 120 |
10%
|
| 2 | Several times | 137 |
11.4%
|
| 3 | Many times | 91 |
7.6%
|
| 4 | Always | 72 |
6%
|
| 9 | Do not know | 8 |
0.7%
|
| 98 | Refused | 0 |
0%
|