| Value | Category | Cases | |
|---|---|---|---|
| 1 | Web | 1490 |
62.7%
|
| 2 | Papier | 306 |
12.9%
|
| -6 | (Folgestudie verweigert) | 580 |
24.4%
|
| -4 | (Papier keine Antwort) | 0 |
0%
|
| -2 | (Keine Antwort) | 0 |
0%
|