| Value | Category | Cases | |
|---|---|---|---|
| 1 | days | 41 |
39.4%
|
| 2 | months | 41 |
39.4%
|
| 3 | years | 21 |
20.2%
|
| 9 | special answers | 1 |
1%
|
| Sysmiss | 15247 |