| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 2 |
0.1%
|
| 0 | Never | 1455 |
60.6%
|
| 1 | Just once or twice | 356 |
14.8%
|
| 2 | Several times | 286 |
11.9%
|
| 3 | Many times | 168 |
7%
|
| 4 | Always | 118 |
4.9%
|
| 9 | Don't Know | 15 |
0.6%
|
| 998 | Refused | 0 |
0%
|