| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1152 |
48%
|
| 1 | Just once or twice | 235 |
9.8%
|
| 2 | Several times | 500 |
20.8%
|
| 3 | Many times | 478 |
19.9%
|
| 4 | Always | 32 |
1.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't Know | 3 |
0.1%
|