| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing | 0 |
0%
|
| 1 | Std 1 | 38 |
19.2%
|
| 2 | Std 2 | 139 |
70.2%
|
| 3 | Std 3 | 21 |
10.6%
|
| Sysmiss | 2 |