| Valor | Categoría | Casos | |
|---|---|---|---|
| 1 | 121 |
10.1%
|
|
| 2 | 443 |
37.1%
|
|
| 3 | 257 |
21.5%
|
|
| 4 | 373 |
31.2%
|
|
| Sysmiss | 8642 |