| Value | Category | Cases | |
|---|---|---|---|
| 1 | present | 242 |
10.3%
|
| 2 | not present | 408 |
17.4%
|
| 9 | not applicable | 1647 |
70.4%
|
| 9999995 | missing:impute | 44 |
1.9%
|
| Sysmiss | 29 |