| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1415 |
59%
|
| 1 | Just once or twice | 447 |
18.6%
|
| 2 | Several times | 351 |
14.6%
|
| 3 | Many times | 157 |
6.5%
|
| 4 | Always | 30 |
1.3%
|
| 9 | Don't Know | 0 |
0%
|
| 998 | Refused | 0 |
0%
|