| Value | Category | Cases | |
|---|---|---|---|
| 1 | months | 916 |
45.9%
|
| 2 | years | 1076 |
54%
|
| 3 | special | 2 |
0.1%
|
| 9 | not applicable | 0 |
0%
|
| 9999995 | missing:impute | 0 |
0%
|
| Sysmiss | 1262 |