| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 8 |
0%
|
| 0 | Never | 10896 |
42.9%
|
| 1 | Just once or twice | 3972 |
15.6%
|
| 2 | Several times | 5236 |
20.6%
|
| 3 | Many times | 3503 |
13.8%
|
| 4 | Always | 1659 |
6.5%
|
| 9 | Don't Know | 123 |
0.5%
|
| 998 | Refused | 0 |
0%
|