| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 4 |
0.2%
|
| 0 | Never | 1295 |
54%
|
| 1 | Just once or twice | 251 |
10.5%
|
| 2 | Several times | 488 |
20.4%
|
| 3 | Many times | 262 |
10.9%
|
| 4 | Always | 97 |
4%
|
| 9 | Don't Know | 1 |
0%
|
| 98 | Refused | 0 |
0%
|