| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing | 0 |
0%
|
| 1 | Std 1 | 3 |
9.4%
|
| 2 | Std 2 | 3 |
9.4%
|
| 3 | Std 3 | 26 |
81.3%
|
| Sysmiss | 168 |