| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very poor | 1 |
0.2%
|
| 2 | Poor | 0 |
0%
|
| 3 | Fair | 4 |
0.9%
|
| 4 | Good | 8 |
1.9%
|
| 5 | Very good | 416 |
96.7%
|
| 6 | Excellent | 1 |
0.2%
|
| 7 | Data not entered | 0 |
0%
|
| Sysmiss | 639 |