| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1965 |
81.9%
|
| 1 | Just once or twice | 278 |
11.6%
|
| 2 | Several times | 91 |
3.8%
|
| 3 | Many times | 43 |
1.8%
|
| 4 | Always | 22 |
0.9%
|
| 9 | Don't Know | 1 |
0%
|
| 998 | Refused | 0 |
0%
|