| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 835 |
69.6%
|
| 1 | Just once or twice | 183 |
15.3%
|
| 2 | Several times | 132 |
11%
|
| 3 | Many times | 42 |
3.5%
|
| 4 | Always | 4 |
0.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 4 |
0.3%
|