| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1903 |
79.3%
|
| 1 | Once or twice | 215 |
9%
|
| 2 | Several times | 184 |
7.7%
|
| 3 | Many times | 78 |
3.3%
|
| 8 | Refused | 1 |
0%
|
| 9 | Don't know | 19 |
0.8%
|