| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1392 |
58.5%
|
| 1 | Just once or twice | 408 |
17.2%
|
| 2 | Several times | 273 |
11.5%
|
| 3 | Many times | 237 |
10%
|
| 4 | Always | 67 |
2.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0%
|