| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1050 |
89.3%
|
| 1 | Just once or twice | 34 |
2.9%
|
| 2 | Several times | 13 |
1.1%
|
| 3 | Many times | 10 |
0.9%
|
| 4 | Always | 67 |
5.7%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't Know | 2 |
0.2%
|