| Value | Category | Cases | |
|---|---|---|---|
| 1 | days | 340 |
27%
|
| 2 | months | 442 |
35.1%
|
| 3 | years | 474 |
37.6%
|
| 9 | special answers | 5 |
0.4%
|
| Sysmiss | 14090 |