| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 2 |
0.1%
|
| 0 | Never | 1394 |
58.2%
|
| 1 | Just once or twice | 386 |
16.1%
|
| 2 | Several times | 354 |
14.8%
|
| 3 | Many times | 160 |
6.7%
|
| 4 | Always | 99 |
4.1%
|
| 9 | Don't Know | 2 |
0.1%
|
| 98 | Refused | 0 |
0%
|