| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 179 |
55.1%
|
| 2 | Months | 87 |
26.8%
|
| 3 | Years | 58 |
17.8%
|
| 9 | Missing | 1 |
0.3%
|
| Sysmiss | 9938 |