| Value | Category | Cases | |
|---|---|---|---|
| 1 | days | 20 |
46.5%
|
| 2 | months | 19 |
44.2%
|
| 3 | years | 4 |
9.3%
|
| 9 | special answers | 0 |
0%
|
| Sysmiss | 15942 |