| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 101 |
9.2%
|
| -7 | NOT APPLICABLE (SPONTANEOUS) | 54 |
4.9%
|
| 0 | Completely unsatisfactory | 113 |
10.3%
|
| 1 | unsatisfactory | 452 |
41.2%
|
| 2 | Satisfactory | 336 |
30.7%
|
| 3 | Very good | 40 |
3.6%
|