| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 3 |
0.1%
|
| 0 | Never | 1450 |
60.4%
|
| 1 | Just once or twice | 409 |
17%
|
| 2 | Several times | 304 |
12.7%
|
| 3 | Many times | 142 |
5.9%
|
| 4 | Always | 92 |
3.8%
|
| 9 | Don't Know | 0 |
0%
|
| 998 | Refused | 0 |
0%
|