| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 3 |
42.9%
|
| 15 | 2 |
28.6%
|
|
| 30 | 1 |
14.3%
|
|
| 31 | 1 |
14.3%
|
|
| Sysmiss | 3043 |