| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1928 |
79.3%
|
| 1 | Just once or twice | 299 |
12.3%
|
| 2 | Several times | 104 |
4.3%
|
| 3 | Many times | 52 |
2.1%
|
| 4 | Always | 45 |
1.9%
|
| 9 | Don't Know | 3 |
0.1%
|
| 998 | Refused | 0 |
0%
|