| Value | Category | Cases | |
|---|---|---|---|
| -999 | ##N/A## | 0 |
0%
|
| 1 | HEAD | 481 |
30.5%
|
| 2 | MIDDLE | 673 |
42.7%
|
| 3 | TAIL | 423 |
26.8%
|
| 999 | NOT APPLICABLE | 0 |
0%
|
| Sysmiss | 3007 |