| Value | Category | Cases | |
|---|---|---|---|
| -99 | Inconsistent | 39 |
19.9%
|
| -5 | Not available | 1 |
0.5%
|
| 1 | March | 150 |
76.5%
|
| 96 | Other | 6 |
3.1%
|
| Sysmiss | 4 |