| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. NONE | 8364 |
67%
|
| 1 | 1. PRIMARY | 3697 |
29.6%
|
| 2 | 2. SECONDARY | 6 |
0%
|
| 3 | 3. TERTIARY | 417 |
3.3%
|
| Sysmiss | 3865 |