| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 771 |
32%
|
| 1 | Just once or twice | 505 |
21%
|
| 2 | Several times | 656 |
27.2%
|
| 3 | Many times | 329 |
13.7%
|
| 4 | Always | 133 |
5.5%
|
| 9 | Don't Know | 16 |
0.7%
|
| 998 | Refused | 0 |
0%
|