| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 20 |
1.7%
|
| -1 | Don't know | 3 |
0.3%
|
| 1 | Lower | 974 |
81.2%
|
| 2 | Middle | 124 |
10.3%
|
| 3 | Higher | 79 |
6.6%
|