| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 943 |
78.6%
|
| 1 | Just once or twice | 83 |
6.9%
|
| 2 | Several times | 59 |
4.9%
|
| 3 | Many times | 22 |
1.8%
|
| 4 | Always | 91 |
7.6%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|