| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Excellent | 22 |
6.3%
|
| 2 | 2. Very good | 75 |
21.6%
|
| 3 | 3. Good | 194 |
55.7%
|
| 4 | 4. Fair | 40 |
11.5%
|
| 5 | 5. Poor | 16 |
4.6%
|
| 6 | 6. Blind | 1 |
0.3%
|
| Sysmiss | 651 |