| Value | Category | Cases | |
|---|---|---|---|
| 13 | 2 |
10%
|
|
| 16 | 1 |
5%
|
|
| 20 | 1 |
5%
|
|
| 21 | 1 |
5%
|
|
| 23 | 1 |
5%
|
|
| 97 | Inconsistent | 0 |
0%
|
| 99 | Missing | 14 |
70%
|
| Sysmiss | 1539 |