| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1457 |
60.7%
|
| 1 | Just once or twice | 363 |
15.1%
|
| 2 | Several times | 347 |
14.5%
|
| 3 | Many times | 160 |
6.7%
|
| 4 | Always | 67 |
2.8%
|
| 8 | Refused | 3 |
0.1%
|
| 9 | Don't know | 3 |
0.1%
|