| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1060 |
88.3%
|
| 1 | Just once or twice | 31 |
2.6%
|
| 2 | Several times | 69 |
5.8%
|
| 3 | Many times | 19 |
1.6%
|
| 4 | Always | 21 |
1.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 0 |
0%
|