| Value | Category | Cases | |
|---|---|---|---|
| -5 | Missing; Unknown | 55 |
0.3%
|
| -4 | Not asked in survey | 1596 |
9.5%
|
| -3 | Not applicable | 421 |
2.5%
|
| -2 | No answer | 1 |
0%
|
| -1 | Don´t know | 0 |
0%
|
| 1 | Lower | 3207 |
19.1%
|
| 2 | Middle | 9695 |
57.8%
|
| 3 | Upper | 1811 |
10.8%
|