| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 3316 |
68.8%
|
| 2 | Primary | 638 |
13.2%
|
| 3 | Secondary + | 738 |
15.3%
|
| 9 | Missing/DK | 128 |
2.7%
|
| Sysmiss | 104 |