| Value | Category | Cases | |
|---|---|---|---|
| 1 | Stage 1 | 20 |
21.7%
|
| 2 | Stage 2 | 29 |
31.5%
|
| 3 | Stage 3 | 37 |
40.2%
|
| 4 | Stage 4 | 6 |
6.5%
|
| Sysmiss | 5270 |