| Value | Category | Cases | |
|---|---|---|---|
| 0 | 337 |
98.3%
|
|
| 1 | 2 |
0.6%
|
|
| 9 | 1 |
0.3%
|
|
| 99 | Unspecified | 3 |
0.9%
|
| Sysmiss | 1601 |