| Value | Category |
|---|---|
| -5 | HT: Dropped out survey; RU,DE: Inappropriate response |
| -4 | Not asked in survey |
| -3 | Not applicable |
| -2 | No answer |
| -1 | Don´t know |
| 1 | Disagree strongly |
| 2 | Disagree a little |
| 3 | Neither agree nor disagree |
| 4 | Agree a little |
| 5 | Agree Strongly |
| Sysmiss |