| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1461 |
60.9%
|
| 1 | Once or twice | 343 |
14.3%
|
| 2 | Several times | 407 |
17%
|
| 3 | Many times | 183 |
7.6%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 6 |
0.3%
|