| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 215 |
26%
|
| 2 | Months | 392 |
47.3%
|
| 3 | Years | 219 |
26.4%
|
| 9 | Missing | 2 |
0.2%
|
| Sysmiss | 9002 |