| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 55 |
36.9%
|
| 2 | Months | 52 |
34.9%
|
| 3 | Years | 42 |
28.2%
|
| 9 | Special answers | 0 |
0%
|
| Sysmiss | 10221 |