| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1965 |
82.1%
|
| 1 | Once or twice | 183 |
7.7%
|
| 2 | Several times | 120 |
5%
|
| 3 | Many times | 41 |
1.7%
|
| 8 | Refused | 10 |
0.4%
|
| 9 | Don't know | 73 |
3.1%
|